Detections
Analytics
CVE-2026-112909
medium
Description
filelock is a platform-independent file lock for Python. Prior to 4.2.1, UnixFileLock can truncate a regular file renamed onto the lock path when another local user has actual rename permission, or hard-linked there under a permissive hard-link policy; when an explicit mode is requested, affected versions from 3.10.2 can also change that file's mode. This issue is fixed in version 4.2.1.
References
https://github.com/tox-dev/filelock/security/advisories/GHSA-69hj-f68j-2879
https://github.com/tox-dev/filelock/releases/tag/4.2.1
https://github.com/tox-dev/filelock/pull/835
https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a