CVE-2026-112909
MEDIUM
NVD
CVSS Score
6.1
Severity
MEDIUM
Published
Oct 20, 2026
Vendor
unknown
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.