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6.9 Moyenne

CVE-2026-114583 tarfile.tar_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like…

Description

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.

Produits et versions touchés

Produit Versions touchées Corrigé en
CPython 3.16 3.16.0a1 → < 3.16.0 3.16.0
CPython 3.15 3.15.0 → < 3.15.2 3.15.2
CPython 3.14 3.14.0 → < 3.14.10 3.14.10
CPython 3.13 3.13.0 → < 3.13.18 3.13.18
CPython 3.12 3.12.0 → < 3.12.16 3.12.16
CPython 3.11 premières → < 3.11.18 3.11.18

Références

Chronologie

  1. Publiée
  2. Dernière modification

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