Vulnerability-Lookup

RHSA-2026:69612

Vulnerability from csaf_redhat - Published: 2026-09-21 19:00 - Updated: 2026-09-30 10:23

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Important

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: python-urllib3: * python3-urllib3+brotli-2.8.0-1.hum1 (noarch) * python3-urllib3+h2-2.8.0-1.hum1 (noarch) * python3-urllib3+socks-2.8.0-1.hum1 (noarch) * python3-urllib3+zstd-2.8.0-1.hum1 (noarch) * python3-urllib3-2.8.0-1.hum1 (noarch) * python-urllib3-2.8.0-1.hum1.src (src)

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-97687

A flaw was found in urllib3. This vulnerability allows a remote attacker on the network to intercept and alter data transmitted through an HTTPS proxy. The issue occurs when target-server Transport Layer Security (TLS) settings inadvertently overwrite the proxy's TLS configuration, which can disable certificate verification on reused connection contexts. Consequently, an attacker can impersonate the proxy to monitor or modify forwarded traffic or capture client credentials.

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE-295 - Improper Certificate Validation

Affected products

Fixed 11 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms	—	Vendor Fix fix

Threats

Impact Important

CVE-2026-97688

A flaw was found in urllib3. A malicious server can trigger a Denial of Service (DoS) by returning a specially crafted compressed response containing trailing bytes. When streaming the response in chunks, the decompression logic can enter an infinite loop by repeatedly processing unconsumed data without making progress. This issue leads to excessive CPU utilization and prevents the affected network request from completing.

5.3 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Affected products

Fixed 11 products, the same list as for CVE-2026-97687

Threats

Impact Moderate

CVE-2026-97689

A flaw was found in urllib3. This flaw allows a Denial of Service (DoS) through unbounded memory allocation when parsing chunk-encoded responses. A malicious server can send an excessively long chunk-size line without a newline, exhausting client memory and terminating the application.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Affected products

Fixed 11 products, the same list as for CVE-2026-97687

Threats

Impact Important

References

28 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:69612	self
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-97688	external
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/security/cve/CVE-2026-97687	external
https://access.redhat.com/security/cve/CVE-2026-97689	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-97687	self
https://bugzilla.redhat.com/show_bug.cgi?id=2543255	external
https://www.cve.org/CVERecord?id=CVE-2026-97687	external
https://nvd.nist.gov/vuln/detail/CVE-2026-97687	external
https://github.com/urllib3/urllib3/commit/07408ce…	external
https://github.com/urllib3/urllib3/commit/b644729…	external
https://github.com/urllib3/urllib3/pull/5093	external
https://github.com/urllib3/urllib3/releases/tag/2.8.0	external
https://github.com/urllib3/urllib3/security/advis…	external
https://access.redhat.com/security/cve/CVE-2026-97688	self
https://bugzilla.redhat.com/show_bug.cgi?id=2543253	external
https://www.cve.org/CVERecord?id=CVE-2026-97688	external
https://nvd.nist.gov/vuln/detail/CVE-2026-97688	external
https://github.com/urllib3/urllib3/commit/ea2ad7b…	external
https://github.com/urllib3/urllib3/security/advis…	external
https://access.redhat.com/security/cve/CVE-2026-97689	self
https://bugzilla.redhat.com/show_bug.cgi?id=2543245	external
https://www.cve.org/CVERecord?id=CVE-2026-97689	external
https://nvd.nist.gov/vuln/detail/CVE-2026-97689	external
https://github.com/urllib3/urllib3/commit/cd770b0…	external
https://github.com/urllib3/urllib3/security/advis…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for Red Hat Hardened Images RPMs is now available.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This update includes the following RPMs:\n\npython-urllib3:\n  * python3-urllib3+brotli-2.8.0-1.hum1 (noarch)\n  * python3-urllib3+h2-2.8.0-1.hum1 (noarch)\n  * python3-urllib3+socks-2.8.0-1.hum1 (noarch)\n  * python3-urllib3+zstd-2.8.0-1.hum1 (noarch)\n  * python3-urllib3-2.8.0-1.hum1 (noarch)\n  * python-urllib3-2.8.0-1.hum1.src (src)",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2026:69612",
        "url": "https://access.redhat.com/errata/RHSA-2026:69612"
      },
      {
        "category": "external",
        "summary": "https://images.redhat.com/",
        "url": "https://images.redhat.com/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-97688",
        "url": "https://access.redhat.com/security/cve/CVE-2026-97688"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/",
        "url": "https://access.redhat.com/security/updates/classification/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-97687",
        "url": "https://access.redhat.com/security/cve/CVE-2026-97687"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-97689",
        "url": "https://access.redhat.com/security/cve/CVE-2026-97689"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_69612.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking": {
      "current_release_date": "2026-09-30T10:23:18+00:00",
      "generator": {
        "date": "2026-09-30T10:23:18+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.4.0"
        }
      },
      "id": "RHSA-2026:69612",
      "initial_release_date": "2026-09-21T19:00:15+00:00",
      "revision_history": [
        {
          "date": "2026-09-21T19:00:15+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-09-30T09:13:11+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-09-30T10:23:18+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Hardened Images",
                "product": {
                  "name": "Red Hat Hardened Images",
                  "product_id": "Red Hat Hardened Images",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:hummingbird:1"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Hardened Images"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python-urllib3-0:2.8.0-1.hum1@src",
                "product": {
                  "name": "python-urllib3-0:2.8.0-1.hum1@src",
                  "product_id": "python-urllib3-0:2.8.0-1.hum1@src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python-urllib3@2.8.0-1.hum1?arch=src\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-source-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                "product": {
                  "name": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_id": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+brotli@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                "product": {
                  "name": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_id": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+brotli@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                "product": {
                  "name": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_id": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+h2@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                "product": {
                  "name": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_id": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+h2@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                "product": {
                  "name": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_id": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+socks@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                "product": {
                  "name": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_id": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+socks@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                "product": {
                  "name": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_id": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+zstd@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                "product": {
                  "name": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_id": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3+zstd@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                "product": {
                  "name": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_id": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                "product": {
                  "name": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_id": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-urllib3@2.8.0-1.hum1?arch=noarch\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-urllib3-0:2.8.0-1.hum1@src as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src"
        },
        "product_reference": "python-urllib3-0:2.8.0-1.hum1@src",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms"
        },
        "product_reference": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        },
        "product_reference": "python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms"
        },
        "product_reference": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        },
        "product_reference": "python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms"
        },
        "product_reference": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        },
        "product_reference": "python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms"
        },
        "product_reference": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        },
        "product_reference": "python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms"
        },
        "product_reference": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        },
        "product_reference": "python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
        "relates_to_product_reference": "Red Hat Hardened Images"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-97687",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "discovery_date": "2026-09-29T15:44:25.449046+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2543255"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in urllib3. This vulnerability allows a remote attacker on the network to intercept and alter data transmitted through an HTTPS proxy. The issue occurs when target-server Transport Layer Security (TLS) settings inadvertently overwrite the proxy\u0027s TLS configuration, which can disable certificate verification on reused connection contexts. Consequently, an attacker can impersonate the proxy to monitor or modify forwarded traffic or capture client credentials.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "urllib3: urllib3: Traffic interception via HTTPS proxy TLS configuration override",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
          "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-97687"
        },
        {
          "category": "external",
          "summary": "RHBZ#2543255",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543255"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-97687",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-97687"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-97687",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97687"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/commit/07408cec79d1856d81bb42c74a904a24fdb9e465",
          "url": "https://github.com/urllib3/urllib3/commit/07408cec79d1856d81bb42c74a904a24fdb9e465"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/commit/b6447295fff7b38fdffc67e0df9712d60cef3cc3",
          "url": "https://github.com/urllib3/urllib3/commit/b6447295fff7b38fdffc67e0df9712d60cef3cc3"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/pull/5093",
          "url": "https://github.com/urllib3/urllib3/pull/5093"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
          "url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77",
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77"
        }
      ],
      "release_date": "2026-09-29T15:30:27.136000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-21T19:00:15+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:69612"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "urllib3: urllib3: Traffic interception via HTTPS proxy TLS configuration override"
    },
    {
      "cve": "CVE-2026-97688",
      "cwe": {
        "id": "CWE-835",
        "name": "Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)"
      },
      "discovery_date": "2026-09-29T15:43:46.798686+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2543253"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in urllib3. A malicious server can trigger a Denial of Service (DoS) by returning a specially crafted compressed response containing trailing bytes. When streaming the response in chunks, the decompression logic can enter an infinite loop by repeatedly processing unconsumed data without making progress. This issue leads to excessive CPU utilization and prevents the affected network request from completing.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "urllib3: urllib3: Denial of Service via infinite loop during chunked Deflate decoding",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
          "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-97688"
        },
        {
          "category": "external",
          "summary": "RHBZ#2543253",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543253"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-97688",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-97688"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-97688",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97688"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f",
          "url": "https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
          "url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g",
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g"
        }
      ],
      "release_date": "2026-09-29T15:32:17.622000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-21T19:00:15+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:69612"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "urllib3: urllib3: Denial of Service via infinite loop during chunked Deflate decoding"
    },
    {
      "cve": "CVE-2026-97689",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-09-29T15:41:38.807723+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2543245"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in urllib3. This flaw allows a Denial of Service (DoS) through unbounded memory allocation when parsing chunk-encoded responses. A malicious server can send an excessively long chunk-size line without a newline, exhausting client memory and terminating the application.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "urllib3: urllib3: Denial of Service via unbounded memory allocation in chunk parser",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
          "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
          "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
          "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-97689"
        },
        {
          "category": "external",
          "summary": "RHBZ#2543245",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543245"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-97689",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-97689"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-97689",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97689"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/commit/cd770b059b543be29298ea5c52afb0b1b090f5ed",
          "url": "https://github.com/urllib3/urllib3/commit/cd770b059b543be29298ea5c52afb0b1b090f5ed"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
          "url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
        },
        {
          "category": "external",
          "summary": "https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw",
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw"
        }
      ],
      "release_date": "2026-09-29T15:36:05.963000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-21T19:00:15+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:69612"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:python-urllib3-0:2.8.0-1.hum1@src",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+brotli-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+h2-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+socks-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3+zstd-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-aarch64-rpms",
            "Red Hat Hardened Images:python3-urllib3-0:2.8.0-1.hum1@noarch@public-hummingbird-x86_64-rpms"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "urllib3: urllib3: Denial of Service via unbounded memory allocation in chunk parser"
    }
  ]
}

CVE-2026-97687 (GCVE-0-2026-97687)

Vulnerability from cvelistv5 – Published: 2026-09-29 15:30 – Updated: 2026-09-29 15:30

Title

urllib3: HTTPS proxy TLS configuration may be ignored or overridden

Summary

urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxy_ssl_context, proxy_assert_hostname, proxy_assert_fingerprint, ssl_context, cert_reqs, verify_mode, use_forwarding_for_https=True, and CERT_NONE configuration paths fail to remain separated because target-server TLS settings are incorrectly applied to the HTTPS proxy connection. The trigger is that an application uses an HTTPS proxy and configures target-server TLS settings that must remain separate from the proxy TLS handshake, including HTTPS forwarding with target-specific identity or credentials. Applying cert_reqs=CERT_NONE can overwrite proxy_ssl_context.verify_mode in place, and the mutation persists so later connections reusing the same context may connect to the HTTPS proxy without certificate verification. The attack mechanism is that an attacker intercepts and impersonates the HTTPS proxy after the effective proxy policy accepts the attacker's certificate. The impact is that the attacker can observe or modify forwarded traffic or receive a target TLS client certificate, while CONNECT tunneling still preserves the separate end-to-end target TLS connection. This issue is fixed in version 2.8.0.

Severity

7.6 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-295 - Improper Certificate Validation
CWE-440 - Expected Behavior Violation

Assigner

GitHub_M mitre root Scorecard

References

5 references

URL	Tags
https://github.com/urllib3/urllib3/security/advis…	x_refsource_CONFIRM
https://github.com/urllib3/urllib3/pull/5093	x_refsource_MISC
https://github.com/urllib3/urllib3/commit/07408ce…	x_refsource_MISC
https://github.com/urllib3/urllib3/commit/b644729…	x_refsource_MISC
https://github.com/urllib3/urllib3/releases/tag/2.8.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
urllib3	urllib3	Affected: >= 1.26.0, < 2.8.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "urllib3",
          "vendor": "urllib3",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.26.0, \u003c 2.8.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "urllib3 is an HTTP client library for Python. From 1.26.0 until 2.8.0, the proxy_ssl_context, proxy_assert_hostname, proxy_assert_fingerprint, ssl_context, cert_reqs, verify_mode, use_forwarding_for_https=True, and CERT_NONE configuration paths fail to remain separated because target-server TLS settings are incorrectly applied to the HTTPS proxy connection. The trigger is that an application uses an HTTPS proxy and configures target-server TLS settings that must remain separate from the proxy TLS handshake, including HTTPS forwarding with target-specific identity or credentials. Applying cert_reqs=CERT_NONE can overwrite proxy_ssl_context.verify_mode in place, and the mutation persists so later connections reusing the same context may connect to the HTTPS proxy without certificate verification. The attack mechanism is that an attacker intercepts and impersonates the HTTPS proxy after the effective proxy policy accepts the attacker\u0027s certificate. The impact is that the attacker can observe or modify forwarded traffic or receive a target TLS client certificate, while CONNECT tunneling still preserves the separate end-to-end target TLS connection. This issue is fixed in version 2.8.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-440",
              "description": "CWE-440: Expected Behavior Violation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T15:30:27.136Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77"
        },
        {
          "name": "https://github.com/urllib3/urllib3/pull/5093",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/pull/5093"
        },
        {
          "name": "https://github.com/urllib3/urllib3/commit/07408cec79d1856d81bb42c74a904a24fdb9e465",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/commit/07408cec79d1856d81bb42c74a904a24fdb9e465"
        },
        {
          "name": "https://github.com/urllib3/urllib3/commit/b6447295fff7b38fdffc67e0df9712d60cef3cc3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/commit/b6447295fff7b38fdffc67e0df9712d60cef3cc3"
        },
        {
          "name": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
        }
      ],
      "source": {
        "advisory": "GHSA-8988-9cw3-xx77",
        "discovery": "UNKNOWN"
      },
      "title": "urllib3: HTTPS proxy TLS configuration may be ignored or overridden"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-97687",
    "datePublished": "2026-09-29T15:30:27.136Z",
    "dateReserved": "2026-09-24T21:43:37.208Z",
    "dateUpdated": "2026-09-29T15:30:27.136Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-97688 (GCVE-0-2026-97688)

Vulnerability from cvelistv5 – Published: 2026-09-29 15:32 – Updated: 2026-09-29 15:42

Title

urllib3: Chunked Deflate streaming can enter an infinite loop

Summary

urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.read_chunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The issue occurs when an untrusted server sends a chunked Deflate response whose decoded body exceeds a positive finite chunk size and whose encoded body has trailing bytes, specifically a response with Transfer-Encoding: chunked and Content-Encoding: deflate, content decoding enabled, and the positive finite amt=N streaming chunk size. The attack mechanism is that a malicious server returns a compressed chunked response with trailing bytes after the Deflate stream. The impact is excessive CPU usage and a request that does not complete, and network read timeouts do not interrupt the loop because no further socket read occurs. This issue is fixed in version 2.8.0.

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-29 15:42 UTC

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/urllib3/urllib3/security/advis…	x_refsource_CONFIRM
https://github.com/urllib3/urllib3/commit/ea2ad7b…	x_refsource_MISC
https://github.com/urllib3/urllib3/releases/tag/2.8.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
urllib3	urllib3	Affected: >= 2.6.2, < 2.8.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-97688",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-29T15:42:28.931695Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-29T15:42:34.502Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "urllib3",
          "vendor": "urllib3",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.6.2, \u003c 2.8.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.read_chunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The issue occurs when an untrusted server sends a chunked Deflate response whose decoded body exceeds a positive finite chunk size and whose encoded body has trailing bytes, specifically a response with Transfer-Encoding: chunked and Content-Encoding: deflate, content decoding enabled, and the positive finite amt=N streaming chunk size. The attack mechanism is that a malicious server returns a compressed chunked response with trailing bytes after the Deflate stream. The impact is excessive CPU usage and a request that does not complete, and network read timeouts do not interrupt the loop because no further socket read occurs. This issue is fixed in version 2.8.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T15:32:17.622Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g"
        },
        {
          "name": "https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f"
        },
        {
          "name": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
        }
      ],
      "source": {
        "advisory": "GHSA-gh4c-6fx4-qh6g",
        "discovery": "UNKNOWN"
      },
      "title": "urllib3: Chunked Deflate streaming can enter an infinite loop"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-97688",
    "datePublished": "2026-09-29T15:32:17.622Z",
    "dateReserved": "2026-09-24T21:43:37.208Z",
    "dateUpdated": "2026-09-29T15:42:34.502Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-97689 (GCVE-0-2026-97689)

Vulnerability from cvelistv5 – Published: 2026-09-29 15:36 – Updated: 2026-09-29 16:23

Title

urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory

Summary

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a malicious server returns Transfer-Encoding: chunked followed by a very long run of bytes without a newline. The attack mechanism is that a malicious HTTP server sends a very long unterminated chunk-size line. The impact is that unbounded memory allocation can exhaust the client process. This issue is fixed in version 2.8.0.

Severity

8.9 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-29 16:21 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/urllib3/urllib3/security/advis…	x_refsource_CONFIRM
https://github.com/urllib3/urllib3/commit/cd770b0…	x_refsource_MISC
https://github.com/urllib3/urllib3/releases/tag/2.8.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
urllib3	urllib3	Affected: >= 1.10.3, < 2.8.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-97689",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-29T16:21:49.840583Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-29T16:23:23.167Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "urllib3",
          "vendor": "urllib3",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.10.3, \u003c 2.8.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.read_chunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a malicious server returns Transfer-Encoding: chunked followed by a very long run of bytes without a newline. The attack mechanism is that a malicious HTTP server sends a very long unterminated chunk-size line. The impact is that unbounded memory allocation can exhaust the client process. This issue is fixed in version 2.8.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.9,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-29T15:36:39.904Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw"
        },
        {
          "name": "https://github.com/urllib3/urllib3/commit/cd770b059b543be29298ea5c52afb0b1b090f5ed",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/commit/cd770b059b543be29298ea5c52afb0b1b090f5ed"
        },
        {
          "name": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
        }
      ],
      "source": {
        "advisory": "GHSA-vxq7-64xx-v4gw",
        "discovery": "UNKNOWN"
      },
      "title": "urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-97689",
    "datePublished": "2026-09-29T15:36:05.963Z",
    "dateReserved": "2026-09-24T21:43:37.208Z",
    "dateUpdated": "2026-09-29T16:23:23.167Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RHSA-2026:69612

CVE-2026-97687 (GCVE-0-2026-97687)

CVE-2026-97688 (GCVE-0-2026-97688)

CVE-2026-97689 (GCVE-0-2026-97689)

Tags

Sightings

Nomenclature

Related by attack behaviour