[ CVE-2026-112937 · Published 20 Oct 2026 ]

Vulnerability in tox-dev filelock

CVSS 6.1 EPSS <1%Fix available

[ Description ]Official description

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, ReadWriteLock can remove a randomized .filelock-* private-hard-link directory during cleanup, allowing another local user with rename access in a non-sticky parent to observe a live name or forge a dead-owner sweep name and rename a sibling directory onto it for deletion. This issue is fixed in version 4.2.1.

[ Fixes ]Fixes and patches