CVE-2026-7774 The advisory has been revoked - it doesn't affect any version of package python3.11 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-PYTHON311-17168013
- published5 Jun 2026
- disclosed4 Jun 2026
Introduced: 4 Jun 2026
CVE-2026-7774 (opens in a new tab)Amendment
The Debian security team deemed this advisory irrelevant for Debian:12.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python3.11 package and not the python3.11 package as distributed by Debian.
tarfile.data_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() to write files outside the destination directory, subject to the permissions of the extracting process.
References
- https://security-tracker.debian.org/tracker/CVE-2026-7774
- https://github.com/python/cpython/issues/149486
- https://github.com/python/cpython/pull/149487
- https://mail.python.org/archives/list/security-announce@python.org/thread/4FU62L2M6RMMHT2QPGQNPEHHUND7CEX5/
- http://www.openwall.com/lists/oss-security/2026/06/04/9
- https://github.com/python/cpython/commit/0478bd83d82b255e0f29f613367a59d261e7eaa2
- https://github.com/python/cpython/commit/0d28f5e46e151718972dfabd91205444d0037b6d
- https://github.com/python/cpython/commit/578411982c16f753f4893532510099ef665117da
- https://github.com/python/cpython/commit/5cf47a248c35c375d610b87b2f72fd1ed454b558
- https://github.com/python/cpython/commit/74cca9a92fb7d653e404843a56b8bdc7b0afdbbf
- https://github.com/python/cpython/commit/10a13bee3c24f9c62b602e696334ff2272a40efc
- https://github.com/python/cpython/commit/c063191cb7f9170f9565e305f8aa2b79ab2bf609