HIGH 8.4 NVD
CVE-2026-82049
a.k.a. 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.
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.
References
- 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/issues/157190
- https://github.com/python/cpython/pull/157191
- https://www.openwall.com/lists/oss-security/2026/09/14/27
This high severity vulnerability with a CVSS score of 8.4 was published on 2026-09-14 via NVD.
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