CVE-2026-112909

Published: Oct 20, 2026Modified: Oct 22, 2026

6.1

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Exploitability: 1.8 / Impact: 4.2

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-706

Use of Incorrectly-Resolved Name or Reference

The product uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.

References (5)

https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a

Source: security-advisories@github.com

https://github.com/tox-dev/filelock/pull/835

Source: security-advisories@github.com

https://github.com/tox-dev/filelock/releases/tag/4.2.1

Source: security-advisories@github.com

https://github.com/tox-dev/filelock/security/advisories/GHSA-69hj-f68j-2879

Source: security-advisories@github.com

https://github.com/tox-dev/filelock/security/advisories/GHSA-69hj-f68j-2879

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.