CVE-2026-112937

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:tox-dev:filelock:*:*:*:*:*:python:*:*

History

21 Oct 2026, 18:05

Type Values Removed Values Added
CPE cpe:2.3:a:tox-dev:filelock:*:*:*:*:*:python:*:*
First Time Tox-dev filelock
Tox-dev
References () https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d - () https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d - Patch
References () https://github.com/tox-dev/filelock/pull/834 - () https://github.com/tox-dev/filelock/pull/834 - Patch
References () https://github.com/tox-dev/filelock/releases/tag/4.2.1 - () https://github.com/tox-dev/filelock/releases/tag/4.2.1 - Release Notes
References () https://github.com/tox-dev/filelock/security/advisories/GHSA-jqc4-5cvw-7w85 - () https://github.com/tox-dev/filelock/security/advisories/GHSA-jqc4-5cvw-7w85 - Exploit, Mitigation, Patch, Vendor Advisory

20 Oct 2026, 15:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-20 15:17

Updated : 2026-10-21 18:05


NVD link : CVE-2026-112937

Mitre link : CVE-2026-112937

CVE.ORG link : CVE-2026-112937


JSON object : View

Products Affected

tox-dev

  • filelock
CWE
CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition