Vulnerability-Lookup

GHSA-74P9-4V44-WWX5

Vulnerability from github – Published: 2025-02-14 18:30 – Updated: 2026-10-17 03:30

Details

This defect is caused by the default locations of Linux and macOS platforms (such as “/etc/mime.types”) also being used on Windows, where they are user-writable locations (“C:\etc\mime.types”).

To work-around this issue a user can call mimetypes.init() with an empty list (“[]”) on Windows platforms to avoid using the default list of known file locations.

Severity

2.3 (Low)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-3220"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-426"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-14T17:15:15Z",
    "severity": "LOW"
  },
  "details": "There is a defect in the CPython standard library module \u201cmimetypes\u201d where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause MemoryError to be raised on Python runtime startup or have file extensions be interpreted as the incorrect file type.\n\nThis defect is caused by the default locations of Linux and macOS platforms (such as \u201c/etc/mime.types\u201d) also being used on Windows, where they are user-writable locations (\u201cC:\\etc\\mime.types\u201d).\n\nTo work-around this issue a user can call mimetypes.init() with an empty list (\u201c[]\u201d) on Windows platforms to avoid using the default list of known file locations.",
  "id": "GHSA-74p9-4v44-wwx5",
  "modified": "2026-10-17T03:30:19Z",
  "published": "2025-02-14T18:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-3220"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/issues/159428"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/04a29bf8f9ff8526cd96cb7368400173303a390a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/5550519259656cbb8eeac09e3dbc0d5c248a4dea"
    },
    {
      "type": "WEB",
      "url": "https://github.com/python/cpython/commit/76f4555c4ff10f5dda58d6528c17787df41e256c"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/CDXW34ND2LSAOYAR5N6UNONP4ZBX4D6R"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20250314-0001"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/02/14/8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:L/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-2024-3220 (GCVE-0-2024-3220)

Vulnerability from cvelistv5 – Published: 2025-02-14 16:18 – Updated: 2026-10-17 00:43

Title

Default mimetype known files writeable on Windows

Summary

There is a defect in the CPython standard library module “mimetypes” where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause MemoryError to be raised on Python runtime startup or have file extensions be interpreted as the incorrect file type. This defect is caused by the default locations of Linux and macOS platforms (such as “/etc/mime.types”) also being used on Windows, where they are user-writable locations (“C:\etc\mime.types”). To work-around this issue a user can call mimetypes.init() with an empty list (“[]”) on Windows platforms to avoid using the default list of known file locations.

Severity

2.3 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-14 16:46 UTC

CWE

CWE-426 - Untrusted Search Path

Assigner

PSF CNA under the mitre root

CNA scorecard B 80/100 over 26 records in the last 180 days details

References

7 references

URL	Tags
https://mail.python.org/archives/list/security-an…	vendor-advisory
https://github.com/python/cpython/issues/159428	issue-tracking
https://github.com/python/cpython/commit/04a29bf8…	patch
https://github.com/python/cpython/commit/55505192…	patch
https://github.com/python/cpython/commit/76f4555c…	patch
http://www.openwall.com/lists/oss-security/2025/02/14/8
https://security.netapp.com/advisory/ntap-2025031…

Impacted products

1 product

Vendor	Product	Version
Python Software Foundation	CPython	Affected: 0 , < 3.16.0 (python)

Show details on NVD website

JSON

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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.

Vulnerability timeline

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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.

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