CVEvulnerability
CVE-2026-87910
5.7 MEDIUM
Official page ↗
- Status
- Awaiting Analysis
- Published
- 2026-09-11
- Last modified
- 2026-10-22
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 5.7 MEDIUM — CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Weaknesses
- CWE-22, CWE-59
Description
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
Related
References
- https://github.com/python/cpython/commit/2eb0c2f1dc71847731b6ab30aebefd058d482a7f github.com
- https://github.com/python/cpython/commit/3105a3498aaf681ce128cf5baf83c2e5574267c5 github.com
- https://github.com/python/cpython/commit/764fd0af8d9e19d3684a58d2e58bf770f0605036 github.com
- https://github.com/python/cpython/commit/9c17bace90f88dfba6d0e2fe23c8e7ae35f83955 github.com
- https://github.com/python/cpython/commit/a4919937a4e1e69a0d178909c6f20557eca5d1d0 github.com
- https://github.com/python/cpython/commit/c1f106d240c4ffcb3608ed0a20e8aba6c865f6d3 github.com
- https://github.com/python/cpython/commit/d9565e54b1fc6d63c5be9afd58114499128fa57b github.com
- https://github.com/python/cpython/commit/fb2f0bbc3b35264f09cc2cb2934b7987527a6bc2 github.com
- https://github.com/python/cpython/issues/157265 github.com
- https://github.com/python/cpython/pull/157266 github.com
- https://mail.python.org/archives/list/[email protected]/thread/57TBTLL2W6APMZR3A25B2YV7GL3EPTDJ/ mail.python.org
- http://www.openwall.com/lists/oss-security/2026/09/11/8 www.openwall.com