Detections
Analytics
CVE-2026-112937
medium
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.
References
https://github.com/tox-dev/filelock/security/advisories/GHSA-jqc4-5cvw-7w85
https://github.com/tox-dev/filelock/releases/tag/4.2.1
https://github.com/tox-dev/filelock/pull/834
https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d