Vulnerability-Lookup

GHSA-86JH-GRMM-2V3H

Vulnerability from github – Published: 2026-03-05 00:31 – Updated: 2026-03-05 21:30

Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-2297"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-04T23:16:10Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-86jh-grmm-2v3h",
  "modified": "2026-03-05T21:30:38Z",
  "published": "2026-03-05T00:31:11Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2297"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/issues/145506"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/pull/145507"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/03/05/6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-03-04 22:10 – Updated: 2026-03-05 18:35

Title

SourcelessFileLoader does not use io.open_code()

Summary

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

Assigner

PSF

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

Impacted products

	Vendor	Product	Version
	Python Software Foundation	CPython	Affected: 0 , < 3.15.0 (python)

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        "providerMetadata": {
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      ],
      "metrics": [
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          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
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            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 5.7,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-86JH-GRMM-2V3H

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

Tags

Sightings

Nomenclature