CVE-2026-82049: CWE-59 in Python Software Foundation CPython
In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.
CVE-2026-82049: CWE-59 in Python Software Foundation CPython
Description
In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.
CVSS v4.0
Score 8.4high
Affected software
Python Software Foundation
CPython
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Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PSF
- Date Reserved
- 2026-08-27T22:23:05.514Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa8483f55bf5e2cf57d35ec
Added to database: 09/14/2026, 19:17:19 UTC
Last updated: 09/14/2026, 19:17:19 UTC
Views: 1
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