MEDIUM 6.9 NVD
CVE-2026-114583
a.k.a. CPython
tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outsid
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/issues/160097
- https://github.com/python/cpython/pull/160098
- https://mail.python.org/archives/list/security-announce@python.org/thread/43JOWPRAV5DI3VZ4
- https://www.openwall.com/lists/oss-security/2026/10/22/33
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-10-22 via NVD.
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