RHSA-2026:24013

Vulnerability from csaf_redhat - Published: 2026-06-07 01:10 - Updated: 2026-07-20 13:44
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: unbound: * python3-unbound-1.25.1-2.hum1 (aarch64, x86_64) * unbound-1.25.1-2.hum1 (aarch64, x86_64) * unbound-anchor-1.25.1-2.hum1 (aarch64, x86_64) * unbound-devel-1.25.1-2.hum1 (aarch64, x86_64) * unbound-dracut-1.25.1-2.hum1 (aarch64, x86_64) * unbound-libs-1.25.1-2.hum1 (aarch64, x86_64) * unbound-munin-1.25.1-2.hum1 (noarch) * unbound-utils-1.25.1-2.hum1 (aarch64, x86_64) * unbound-1.25.1-2.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-2026-41292

A flaw was found in Unbound. A remote attacker can exploit this vulnerability by sending queries with an excessive number of EDNS (Extension Mechanisms for DNS) options. This can cause Unbound threads to be held hostage while parsing and creating internal data structures for these options. Coordinated attacks can lead to resource exhaustion, resulting in a degradation of service or a denial of service (DoS) for legitimate users.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1050 - Excessive Platform Resource Consumption within a Loop
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:unbound-main@aarch64 —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:unbound-main@noarch —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:unbound-main@src —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:unbound-main@x86_64 —
Vendor Fix fix
Threats
Impact Important
CVE-2026-42534

A flaw was found in Unbound. An adversary who can query a vulnerable Unbound instance and control a slow or malicious domain name server can exploit a vulnerability in the jostle logic. This flaw allows retransmitted queries to renew the age of slow-running queries, preventing them from being identified as aged and replaced. This can degrade Unbound's resolution performance, potentially leading to a denial of resolution service through coordinated attacks.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-911 - Improper Update of Reference Count
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:unbound-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:unbound-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:unbound-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:unbound-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-44390

A flaw was found in Unbound. A remote attacker can exploit this vulnerability by sending specially crafted DNS responses containing very large Resource Record Sets (RRsets) that require name compression. This can cause Unbound to spend a significant amount of time processing these responses, leading to degraded performance and potentially a denial of service (DoS) for legitimate users.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1050 - Excessive Platform Resource Consumption within a Loop
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:unbound-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:unbound-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:unbound-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:unbound-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
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\nunbound:\n  * python3-unbound-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-anchor-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-devel-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-dracut-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-libs-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-munin-1.25.1-2.hum1 (noarch)\n  * unbound-utils-1.25.1-2.hum1 (aarch64, x86_64)\n  * unbound-1.25.1-2.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-2026:24013",
        "url": "https://access.redhat.com/errata/RHSA-2026:24013"
      },
      {
        "category": "external",
        "summary": "https://images.redhat.com/",
        "url": "https://images.redhat.com/"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-44390",
        "url": "https://access.redhat.com/security/cve/CVE-2026-44390"
      },
      {
        "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-2026-42534",
        "url": "https://access.redhat.com/security/cve/CVE-2026-42534"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/cve/CVE-2026-41292",
        "url": "https://access.redhat.com/security/cve/CVE-2026-41292"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_24013.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update",
    "tracking": {
      "current_release_date": "2026-07-20T13:44:29+00:00",
      "generator": {
        "date": "2026-07-20T13:44:29+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.7"
        }
      },
      "id": "RHSA-2026:24013",
      "initial_release_date": "2026-06-07T01:10:52+00:00",
      "revision_history": [
        {
          "date": "2026-06-07T01:10:52+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-18T05:32:03+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-07-20T13:44:29+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": "unbound-main@aarch64",
                "product": {
                  "name": "unbound-main@aarch64",
                  "product_id": "unbound-main@aarch64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-unbound@1.25.1-2.hum1?arch=aarch64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-aarch64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "unbound-main@x86_64",
                "product": {
                  "name": "unbound-main@x86_64",
                  "product_id": "unbound-main@x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/python3-unbound@1.25.1-2.hum1?arch=x86_64\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-x86_64-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "unbound-main@src",
                "product": {
                  "name": "unbound-main@src",
                  "product_id": "unbound-main@src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/unbound@1.25.1-2.hum1?arch=src\u0026distro=hummingbird-20251124\u0026repository_id=public-hummingbird-source-rpms"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "unbound-main@noarch",
                "product": {
                  "name": "unbound-main@noarch",
                  "product_id": "unbound-main@noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/unbound-munin@1.25.1-2.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": "unbound-main@aarch64 as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:unbound-main@aarch64"
        },
        "product_reference": "unbound-main@aarch64",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "unbound-main@noarch as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:unbound-main@noarch"
        },
        "product_reference": "unbound-main@noarch",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "unbound-main@src as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:unbound-main@src"
        },
        "product_reference": "unbound-main@src",
        "relates_to_product_reference": "Red Hat Hardened Images"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "unbound-main@x86_64 as a component of Red Hat Hardened Images",
          "product_id": "Red Hat Hardened Images:unbound-main@x86_64"
        },
        "product_reference": "unbound-main@x86_64",
        "relates_to_product_reference": "Red Hat Hardened Images"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-41292",
      "cwe": {
        "id": "CWE-1050",
        "name": "Excessive Platform Resource Consumption within a Loop"
      },
      "discovery_date": "2026-05-20T10:00:54.433285+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480125"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Unbound. A remote attacker can exploit this vulnerability by sending queries with an excessive number of EDNS (Extension Mechanisms for DNS) options. This can cause Unbound threads to be held hostage while parsing and creating internal data structures for these options. Coordinated attacks can lead to resource exhaustion, resulting in a degradation of service or a denial of service (DoS) for legitimate users.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "unbound: Unbound: Denial of Service via excessive EDNS options",
          "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:unbound-main@aarch64",
          "Red Hat Hardened Images:unbound-main@noarch",
          "Red Hat Hardened Images:unbound-main@src",
          "Red Hat Hardened Images:unbound-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-41292"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480125",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480125"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-41292",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-41292"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-41292",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41292"
        },
        {
          "category": "external",
          "summary": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-41292.txt",
          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-41292.txt"
        }
      ],
      "release_date": "2026-05-20T09:19:13.022000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-07T01:10:52+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:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:24013"
        }
      ],
      "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:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "unbound: Unbound: Denial of Service via excessive EDNS options"
    },
    {
      "cve": "CVE-2026-42534",
      "cwe": {
        "id": "CWE-911",
        "name": "Improper Update of Reference Count"
      },
      "discovery_date": "2026-05-20T10:01:15.833379+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480131"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Unbound. An adversary who can query a vulnerable Unbound instance and control a slow or malicious domain name server can exploit a vulnerability in the jostle logic. This flaw allows retransmitted queries to renew the age of slow-running queries, preventing them from being identified as aged and replaced. This can degrade Unbound\u0027s resolution performance, potentially leading to a denial of resolution service through coordinated attacks.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw is rated as Important. An attacker controlling a malicious DNS server could exploit a vulnerability in Unbound\u0027s jostle logic, leading to degraded resolution performance and a potential denial of service. This occurs because retransmitted queries can incorrectly renew the age of slow-running queries, preventing their proper replacement.",
          "title": "Statement"
        },
        {
          "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:unbound-main@aarch64",
          "Red Hat Hardened Images:unbound-main@noarch",
          "Red Hat Hardened Images:unbound-main@src",
          "Red Hat Hardened Images:unbound-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-42534"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480131",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480131"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-42534",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-42534"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42534",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42534"
        },
        {
          "category": "external",
          "summary": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42534.txt",
          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-42534.txt"
        }
      ],
      "release_date": "2026-05-20T09:19:37.920000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-07T01:10:52+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:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:24013"
        },
        {
          "category": "workaround",
          "details": "To mitigate the risk of denial of resolution service, restrict Unbound\u0027s network exposure. Configure Unbound to only accept queries from trusted internal networks and to forward its own queries exclusively to trusted, well-maintained upstream DNS servers. This reduces the opportunity for an adversary to interact with or act as a malicious upstream for the vulnerable Unbound instance. After modifying Unbound\u0027s configuration, a service restart is required for changes to take effect. This may temporarily interrupt DNS resolution services.",
          "product_ids": [
            "Red Hat Hardened Images:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ]
        }
      ],
      "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:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic"
    },
    {
      "cve": "CVE-2026-44390",
      "cwe": {
        "id": "CWE-1050",
        "name": "Excessive Platform Resource Consumption within a Loop"
      },
      "discovery_date": "2026-05-20T10:01:12.753383+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480130"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Unbound. A remote attacker can exploit this vulnerability by sending specially crafted DNS responses containing very large Resource Record Sets (RRsets) that require name compression. This can cause Unbound to spend a significant amount of time processing these responses, leading to degraded performance and potentially a denial of service (DoS) for legitimate users.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important denial of service vulnerability in Unbound. When configured as a recursive DNS resolver, Unbound can be subjected to excessive resource consumption by a remote attacker sending specially crafted DNS responses containing very large Resource Record Sets. This can lead to degraded performance and a denial of service for legitimate DNS queries, impacting services that rely on the resolver.",
          "title": "Statement"
        },
        {
          "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:unbound-main@aarch64",
          "Red Hat Hardened Images:unbound-main@noarch",
          "Red Hat Hardened Images:unbound-main@src",
          "Red Hat Hardened Images:unbound-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-44390"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480130",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480130"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-44390",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-44390"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-44390",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44390"
        },
        {
          "category": "external",
          "summary": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-44390.txt",
          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2026-44390.txt"
        }
      ],
      "release_date": "2026-05-20T09:21:24.590000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-07T01:10:52+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:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:24013"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ]
        }
      ],
      "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:unbound-main@aarch64",
            "Red Hat Hardened Images:unbound-main@noarch",
            "Red Hat Hardened Images:unbound-main@src",
            "Red Hat Hardened Images:unbound-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.