File Metadata Modification Vulnerability in Python 3.12+
CVE-2024-12718

10CRITICAL

Key Information:

Vendor

Python Software Foundation

Status
Cpython
Vendor
CVE Published:
3 June 2025

What is CVE-2024-12718?

A security flaw in the tarfile module of Python allows unauthorized modification of file metadata and permissions when extracting untrusted tar archives. Specifically, this vulnerability arises when using the TarFile.extractall() or TarFile.extract() methods with the filter parameter set to 'data' or 'tar' in Python versions 3.12 and later. Users should be cautious, as the default filter behavior changed in Python 3.14, which may inadvertently expose applications to risks. It is critical to avoid extracting archives from untrusted sources and to monitor project updates for potential patches.

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Affected Version(s)

CPython 0 < 3.9.23

CPython 3.10.0 < 3.10.18

CPython 3.11.0 < 3.11.13

References

https://github.com/python/cpython/issues/135034
issue-tracking
https://github.com/python/cpython/pull/135037
patch
https://github.com/python/cpython/issues/127987
issue-tracking

CVSS V4

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Wilk
Seth Larson
Petr Viktorin
Serhiy Storchaka
Hugo van Kemenade
Łukasz Langa
Thomas Wouters
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