CVE-2026-82049
highpriority · track · 0EPSS 0.002 · 8 %ileDEFRUSEPSS · scored 2026-10-28
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.8–8.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (17)
Products and version ranges known to be affected.
advisories (7)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3367Python: Schwachstelle ermöglicht Manipulation und Offenlegung von DatenDeutsch2026-09-14csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Python ausnutzen, um Daten zu manipulieren oder offenzulegen.
- BIT-libpython-2026-82049tarfile extraction filters allow file modification and content disclosure via hard link to symlink2026-09-21vendor · osvUS
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.
- BIT-python-2026-82049tarfile extraction filters allow file modification and content disclosure via hard link to symlink2026-09-21vendor · osvUS
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.
- BIT-python-min-2026-82049tarfile extraction filters allow file modification and content disclosure via hard link to symlink2026-09-21vendor · osvUS
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.
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
- PSF-0000-CVE-2026-820492026-09-14vendor · osvUS
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.
- PSF-2026-412026-09-14vendor · osvUS
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.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (12) nvd
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2026/09/14/27
- https://github.com/python/cpython/commit/197663d63afed27f66e10e23c194e8a634e60913
- https://github.com/python/cpython/commit/28f315486b3da0352b9a1de1c3c97f4127ba4771
- https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca
- https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3
- https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d
- https://github.com/python/cpython/commit/c66df4e70435d257fd488b35ea129c6f317433a8
- https://github.com/python/cpython/commit/cc1689830c6b9aaddded2fb9f2fe8116867e2c0e
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