Veille CVE

Semaine du 22 juin au 28 juin 2026

3 CVE

  1. CVE-2026-11972 8.2 Élevée

    Python Software Foundation CPython

    When using the "tarfile" module with a file opened in "streaming mode" (mode="r|") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.

  2. CVE-2026-0864 5.5 Moyenne

    Python Software Foundation CPython · Python python

    When using the "configparser" module to write configuration files containing multi-line text values with carriage return characters (\r) the resulting file could be injected with unexpected keys and values if the attacker controls the written value.

  3. CVE-2026-11940 7.8 Élevée

    Python Software Foundation CPython

    tarfile.extractall() with the 'data' or 'tar' filter could be bypassed by a crafted archive where a hardlink references a symlink stored at a deeper name than the hardlink itself.  The extraction fallback validated the symlink at it's archived location but recreated it at the hardlink's shallower path, letting a relative target the filter judged contained escape the destination directory.  This allowed a malicious tar archive to create a symlink pointing outside the destination, enabling out-of-destination file reads or writes. This was an incomplete fix of CVE-2025-4330.