CVE-2026-4360Tarfile.extract() doesn't fully respect filter parameter

Beschreibung

In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• https://mail.python.org/archives/list/security-announce@python.org/thread/TWZW2PC2AZOV6FENIHFSRC63OM7MBGSB/ vendor-advisoryIssue TrackingVendor Advisory
• https://github.com/python/cpython/pull/151988 patchIssue TrackingPatch
• https://github.com/python/cpython/issues/151987 issue-trackingIssue TrackingPatch
• https://github.com/python/cpython/commit/5e0ef3f1afe892e4f64eb83368db57ac4c40cba0 patchPatch
• https://github.com/python/cpython/commit/7b57e8d51446297b8c7c482d224bc5f1938e4301 patchPatch
• https://github.com/python/cpython/commit/7ccdbaba2c54250a70d7f25632152df7655a5e0a patchPatch
• https://github.com/python/cpython/commit/eee3ddf0ca10283cc7fea724aae9cd8665f8d15e patchPatch
• https://github.com/python/cpython/commit/d2b2f5eacab4dd48446b63340613b05dcbbf0b44 patchPatch
• https://github.com/python/cpython/commit/cf23b9153181062150d061468b6d24af33fe214f patch
• https://github.com/python/cpython/commit/0367912be336348b30572f8029cec4a282782d92 patch