CVE-2026-114583 Affecting python3.15 package, versions <3.15.1-1
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-DEBIANUNSTABLE-PYTHON315-21603295
- published23 Oct 2026
- disclosed22 Oct 2026
Introduced: 22 Oct 2026
NewCVE-2026-114583 (opens in a new tab)How to fix?
Upgrade Debian:unstable python3.15 to version 3.15.1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python3.15 package and not the python3.15 package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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://security-tracker.debian.org/tracker/CVE-2026-114583
- 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/43JOWPRAV5DI3VZ4FUEUAZOHCATXXOCK/
- https://github.com/python/cpython/commit/0901ad4ffb22605f12b705d1c1197f0a01f0ba0b
- https://github.com/python/cpython/commit/c6ada40177436e4e2533a7b252082b5f0c043477
- https://github.com/python/cpython/commit/e7e0b3523ad6ba8472873dda594cf4021a16f8b5
- https://github.com/python/cpython/commit/04d8fca7da2cf3ebc0881fec8a53a1330c3b665d
- https://github.com/python/cpython/commit/bc93f8ad4c4a0f92d184ec8fccc8ff8a651dcec2
- https://github.com/python/cpython/commit/f4401da82e2baec5dab06cf070fbca77d53220f0