CVE-2026-82049
Published: September 18, 2026Last modified: October 3, 2026
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.
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | python3 | Fixed (3.11.17-r0) |
| 25 LTS | python3 | Fixed (3.12.15-r0) | |
| Stream | python3 | Fixed (3.14.3-r0) | |
| Hardened Containers | 23 LTS | python3 | Fixed (3.11.17-r0) |
| 25 LTS | python3 | Fixed (3.12.15-r0) | |
| Stream | python3 | Fixed (3.14.3-r0) |
References
- 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
- https://github.com/python/cpython/commit/cccc7ec30212dba2abef53ce4a2bed112ddb690c
- https://github.com/python/cpython/issues/157190
- https://github.com/python/cpython/pull/157191
- https://mail.python.org/archives/list/[email protected]/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/