Vulnerability Description
tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() with filter="tar" to write files outside the destination directory, subject to the permissions of the extracting process. This is the tarfile.tar_filter counterpart of CVE-2026-7774, which covered tarfile.data_filter.
References
- https://github.com/python/cpython/commit/04d8fca7da2cf3ebc0881fec8a53a1330c3b665
- https://github.com/python/cpython/commit/0901ad4ffb22605f12b705d1c1197f0a01f0ba0
- https://github.com/python/cpython/commit/bc93f8ad4c4a0f92d184ec8fccc8ff8a651dcec
- https://github.com/python/cpython/commit/c6ada40177436e4e2533a7b252082b5f0c04347
- https://github.com/python/cpython/commit/e7e0b3523ad6ba8472873dda594cf4021a16f8b
- https://github.com/python/cpython/commit/f4401da82e2baec5dab06cf070fbca77d53220f
- https://github.com/python/cpython/issues/160097
- https://github.com/python/cpython/pull/160098
- https://mail.python.org/archives/list/[email protected]/thread/43JOWP
FAQ
What is CVE-2026-114583?
CVE-2026-114583 is a documented vulnerability. tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. Thi...
How severe is CVE-2026-114583?
CVSS scoring is not yet available for CVE-2026-114583. Check NVD for updates.
Is there a patch for CVE-2026-114583?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.