Vulnerability-Lookup

CVE-2026-2297 (GCVE-0-2026-2297)

Vulnerability from cvelistv5 – Published: 2026-03-04 22:10 – Updated: 2026-08-13 00:28

Title

SourcelessFileLoader does not use io.open_code()

Summary

The import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files. sys.audit handlers for this audit event therefore do not fire.

Severity

5.7 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-12 14:58 UTC

CWE

CWE-668 - Exposure of Resource to Wrong Sphere

Assigner

PSF mitre root

References

9 references

URL	Tags
https://github.com/python/cpython/issues/145506	issue-tracking
https://github.com/python/cpython/pull/145507	patch
https://github.com/python/cpython/commit/482d6f8b…	patch
https://github.com/python/cpython/commit/a51b1b51…	patch
https://github.com/python/cpython/commit/e58e9802…	patch
https://github.com/python/cpython/commit/69ddd9bb…	patch
https://github.com/python/cpython/commit/876858c9…	patch
https://github.com/python/cpython/commit/c70adad7…	patch
http://www.openwall.com/lists/oss-security/2026/03/05/6

Impacted products

1 product

Vendor	Product	Version	CPE status
Python Software Foundation	CPython	Affected: 0 , < 3.10.21 (python) Affected: 3.11.0 , < 3.11.16 (python) Affected: 3.12.0 , < 3.12.14 (python) Affected: 3.13.0 , < 3.13.13 (python) Affected: 3.14.0 , < 3.14.4 (python) Affected: 3.15.0a1 , < 3.15.0a7 (python)	guessed

Show details on NVD website

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                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-13T00:28:17.928Z",
            "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
            "shortName": "PSF"
          },
          "references": [
            {
              "tags": [
                "issue-tracking"
              ],
              "url": "https://github.com/python/cpython/issues/145506"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/pull/145507"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/commit/69ddd9bb2cc4bd69b1565647c18659c6a789ccd9"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/commit/876858c9f65d9ab656c7fa639f268ce7856d89dd"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/python/cpython/commit/c70adad78caeeea33f92f560ecb93331ca11bf66"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "SourcelessFileLoader does not use io.open_code()",
          "x_generator": {
            "engine": "Vulnogram 0.5.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "assignerShortName": "PSF",
        "cveId": "CVE-2026-2297",
        "datePublished": "2026-03-04T22:10:43.297Z",
        "dateReserved": "2026-02-10T16:26:08.298Z",
        "dateUpdated": "2026-08-13T00:28:17.928Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

RHSA-2026:19064

Vulnerability from csaf_redhat - Published: 2026-05-19 13:35 - Updated: 2026-09-18 17:40

Summary

Red Hat Security Advisory: python3.12 security update

Severity

Important

Scope

12 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

A flaw was found in CPython. This vulnerability allows a local user with low privileges to bypass security auditing mechanisms. The issue occurs because the SourcelessFileLoader component, responsible for handling older Python compiled files (.pyc), does not properly trigger system audit events. This oversight could enable malicious activities to go undetected, compromising the integrity of the system.

3.3 (Low)


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

Fixed: 54 products

https://access.redhat.com/errata/RHSA-2026:19064

Open the full advisory

RHSA-2026:21275

Vulnerability from csaf_redhat - Published: 2026-05-27 07:45 - Updated: 2026-09-18 17:40

Summary

Red Hat Security Advisory: Red Hat Update Infrastructure 5.1 security update

Severity

Critical

Scope

29 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 2 products Known not affected: 2 products

https://access.redhat.com/errata/RHSA-2026:21275

Open the full advisory

RHSA-2026:58981

Vulnerability from csaf_redhat - Published: 2026-08-24 11:15 - Updated: 2026-09-18 17:40

Summary

Red Hat Security Advisory: Red Hat Update Infrastructure 5.3 Technology Preview security update

Severity

Critical

Scope

118 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 2 products Known not affected: 2 products

https://access.redhat.com/errata/RHSA-2026:58981

Open the full advisory

RHSA-2026:7443

Vulnerability from csaf_redhat - Published: 2026-04-10 19:25 - Updated: 2026-09-10 15:03

Summary

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

Severity

Important

Scope

18 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:7443

Open the full advisory

RHSA-2026:7661

Vulnerability from csaf_redhat - Published: 2026-04-11 19:41 - Updated: 2026-09-10 15:03

Summary

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

Severity

Important

Scope

16 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 4 products

https://access.redhat.com/errata/RHSA-2026:7661

Open the full advisory

RHSA-2026:8822

Vulnerability from csaf_redhat - Published: 2026-04-17 18:54 - Updated: 2026-09-10 15:03

Summary

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

Severity

Important

Scope

18 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:8822

Open the full advisory

RHSA-2026:8824

Vulnerability from csaf_redhat - Published: 2026-04-17 19:24 - Updated: 2026-09-10 15:03

Summary

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

Severity

Important

Scope

18 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 3 products

https://access.redhat.com/errata/RHSA-2026:8824

Open the full advisory

RHSA-2026:19176

Vulnerability from csaf_opensuse - Published: 2026-05-19 00:00 - Updated: 2026-09-16 18:17

Summary

security update for python3.14

Severity

Important

Scope

9 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

5.5 (Medium)


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

Recommended: 28 products

Open the full advisory

RHSA-2026:19177

Vulnerability from csaf_opensuse - Published: 2026-05-19 18:28 - Updated: 2026-09-18 17:40

Summary

Red Hat Security Advisory: python3.12 security update

Severity

Important

Scope

12 vulnerabilities in this advisory, including CVE-2026-2297.

CVE-2026-2297

3.3 (Low)


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

Fixed: 56 products

https://access.redhat.com/errata/RHSA-2026:19177

Open the full advisory

RLSA-2026:19019 (CVE-2026-0865)

Vulnerability from osv_rocky – Published: 2026-05-29 16:03 – Updated: 2026-06-12 12:06 – Source website

Summary

Important: python3.14 security update

Details

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

cpython: wsgiref.headers.Headers allows header newline injection in Python (CVE-2026-0865)
cpython: CPython: Logging Bypass in Legacy .pyc File Handling (CVE-2026-2297)
cpython: Incomplete control character validation in http.cookies (CVE-2026-3644)
cpython: Stack overflow parsing XML with deeply nested DTD content models (CVE-2026-4224)
python: Python: Command-line option injection in webbrowser.open() via crafted URLs (CVE-2026-4519)
python: Python: HTTP header injection via CR/LF in proxy tunnel headers (CVE-2026-1502)
python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules (CVE-2026-6100)
python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API (CVE-2026-4786)
python: Python: Information disclosure and arbitrary code execution via remote debugging with a malicious process. (CVE-2026-5713)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

8.1 (High)


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

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:19019	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2448181	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2448168	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2449649	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2444691	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2457409	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2458049	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2458239	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2431367	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2457932	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "python3.14",
        "purl": "pkg:rpm/rocky-linux/python3.14?distro=rocky-linux-10\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:3.14.4-2.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": "Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.\n\nSecurity Fix(es):\n\n* cpython: wsgiref.headers.Headers allows header newline injection in Python (CVE-2026-0865)\n\n* cpython: CPython: Logging Bypass in Legacy .pyc File Handling (CVE-2026-2297)\n\n* cpython: Incomplete control character validation in http.cookies (CVE-2026-3644)\n\n* cpython: Stack overflow parsing XML with deeply nested DTD content models (CVE-2026-4224)\n\n* python: Python: Command-line option injection in webbrowser.open() via crafted URLs (CVE-2026-4519)\n\n* python: Python: HTTP header injection via CR/LF in proxy tunnel headers (CVE-2026-1502)\n\n* python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules (CVE-2026-6100)\n\n* python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API (CVE-2026-4786)\n\n* python: Python: Information disclosure and arbitrary code execution via remote debugging with a malicious process. (CVE-2026-5713)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:19019",
  "modified": "2026-06-12T12:06:10.755449Z",
  "published": "2026-05-29T16:03:24.060458Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:19019"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448181"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448168"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449649"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2444691"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457409"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458049"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458239"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2431367"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457932"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: python3.14 security update",
  "upstream": [
    "CVE-2026-0865",
    "CVE-2026-1502",
    "CVE-2026-2297",
    "CVE-2026-3644",
    "CVE-2026-4224",
    "CVE-2026-4519",
    "CVE-2026-4786",
    "CVE-2026-5713",
    "CVE-2026-6100"
  ]
}

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.

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

CVE-2026-2297 (GCVE-0-2026-2297)

RLSA-2026:19019 (CVE-2026-0865)

Tags

Sightings

Nomenclature

Related by attack behaviour