CVE-2026-87910
mediumPriorität · verfolgen · 0EPSS 0.005 · 42. PerzentilDEUSEPSS · bewertet 2026-10-22
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · low–medium · 1.9–5.7
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betroffene Produkte (18)
Betroffene Produkte und Versionsbereiche.
Advisories (5)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2026-3335CPython: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2026-09-13csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in CPython ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- BIT-libpython-2026-87910tarfile hardlink fallback ignores custom extraction filter rejection via None2026-09-17vendor · osvUS
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
- BIT-python-2026-87910tarfile hardlink fallback ignores custom extraction filter rejection via None2026-09-17vendor · osvUS
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
- BIT-python-min-2026-87910tarfile hardlink fallback ignores custom extraction filter rejection via None2026-09-17vendor · osvUS
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
- PSF-2026-402026-09-11vendor · osvUS
When tarfile extracts a link on a system that doesn't support links, it falls back to extracting a member from the archive. In this case, the filter function is run twice: once for the extracted member, and once with name set to the location of the link. For one of the calls, the return value was ignored. Instead, the member should be skipped if either call returns None.
auch bekannt als (4)
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Referenzen (12) nvd
Externe Belege — Patches, Meldungen, Analysen.
- http://www.openwall.com/lists/oss-security/2026/09/11/8
- https://github.com/python/cpython/commit/2eb0c2f1dc71847731b6ab30aebefd058d482a7f
- https://github.com/python/cpython/commit/3105a3498aaf681ce128cf5baf83c2e5574267c5
- https://github.com/python/cpython/commit/764fd0af8d9e19d3684a58d2e58bf770f0605036
- https://github.com/python/cpython/commit/9c17bace90f88dfba6d0e2fe23c8e7ae35f83955
- https://github.com/python/cpython/commit/a4919937a4e1e69a0d178909c6f20557eca5d1d0
- https://github.com/python/cpython/commit/c1f106d240c4ffcb3608ed0a20e8aba6c865f6d3
- https://github.com/python/cpython/commit/d9565e54b1fc6d63c5be9afd58114499128fa57b
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