CVE-2026-112906

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

4.7

Vector

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

Exploitability: 1.0 / Impact: 3.6

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

Description

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftFileLock versions from 4.1.0 can reuse a stale observation when an attacker pre-dates and removes its own marker, at least two lock-user processes are waiting, coarse or matching modification times preserve the observation, and an honest contender creates a fresh marker on the reused inode, causing that live marker to be removed as stale. This issue is fixed in version 4.2.1.

Related CWEs

CWE-694

Use of Multiple Resources with Duplicate Identifier

The product uses multiple resources that can have the same identifier, in a context in which unique identifiers are required.

References (4)

https://github.com/tox-dev/filelock/commit/740ff666b62a88496c8d7394e4e6230605e4d62b

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-2g95-wg33-c5x2

Source: security-advisories@github.com

https://github.com/tox-dev/filelock/security/advisories/GHSA-2g95-wg33-c5x2

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

Timeline

No history available yet.