CVE-2026-112939 | BDVDB-2026-393151 Detail

Description#

filelock is a platform-independent file lock for Python. From 3.22.0 until 4.2.1, SoftFileLock can trust a forged process identifier in a marker that an attacker can modify but cannot remove, allowing an authorized contender such as another process of the holder's account or root to act as a confused deputy, remove the live marker, and admit another holder. This issue is fixed in version 4.2.1.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12026-10-20Record published in the CVE List.