CVE-2026-4360
Tarfile.extract() doesn't fully respect filter parameter
En bref
- Sévérité
- LOW 2.0
- EPSS
- EPSS 0.48 % · centile 41 (2026-10-27)
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- PSF
- Statut NVD
- Modified
Description
In the Tarfile.extract() function, the filter parameter is not passed properly when extracting hardlinks. An affected system that extracts content from untrusted tar files could end up writing files with an unexpected uid/gid despite the user passing filter='data' to the extract() function.
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 4.0 | LOW 2.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | PSF |
| CVSS 4.0 | LOW 2.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · cna@python.org (Secondary) |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | NVD · nvd@nist.gov (Primary) |
Faiblesses (CWE)
Références européennes
- ENISA EUVD · EUVD-2026-40336
- GCVE · GCVE-0-2026-4360
Avis du CERT-FR
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1249 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0828 — Vulnérabilité dans CPython · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*< 3.1.5
Produits affectés
| Produit | Versions |
|---|---|
| Python Software Foundation · CPython | affected 0 < 3.10.21 ; affected 3.11.0 < 3.11.16 ; affected 3.12.0 < 3.12.14 ; affected 3.13.0 < 3.13.15 ; affected 3.14.0 < 3.14.7 ; affected 3.15.0a1 < 3.15.0b4 |
Références
- https://mail.python.org/archives/list/security-announce@python.org/thread/TWZW2PC2AZOV6FENIHFSRC63OM7MBGSB/
- https://github.com/python/cpython/pull/151988
- https://github.com/python/cpython/issues/151987
- https://github.com/python/cpython/commit/5e0ef3f1afe892e4f64eb83368db57ac4c40cba0
- https://github.com/python/cpython/commit/7b57e8d51446297b8c7c482d224bc5f1938e4301
- https://github.com/python/cpython/commit/7ccdbaba2c54250a70d7f25632152df7655a5e0a
- https://github.com/python/cpython/commit/eee3ddf0ca10283cc7fea724aae9cd8665f8d15e
- https://github.com/python/cpython/commit/d2b2f5eacab4dd48446b63340613b05dcbbf0b44
- https://github.com/python/cpython/commit/cf23b9153181062150d061468b6d24af33fe214f
- https://github.com/python/cpython/commit/0367912be336348b30572f8029cec4a282782d92
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |