CVE-2026-112914

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftFileLock can restore a stale marker by name after moving it aside, allowing another local user with rename access in a non-sticky lock directory to swap in a symbolic link and, on a runtime that follows the link and a same-filesystem target, make the lock user hard-link one of its files into the lock directory. 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, 21:17

Type Values Removed Values Added
References () https://github.com/tox-dev/filelock/commit/740ff666b62a88496c8d7394e4e6230605e4d62b - () https://github.com/tox-dev/filelock/commit/740ff666b62a88496c8d7394e4e6230605e4d62b - Patch
References () https://github.com/tox-dev/filelock/pull/843 - () https://github.com/tox-dev/filelock/pull/843 - 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-crv4-6mhj-j5jh - () https://github.com/tox-dev/filelock/security/advisories/GHSA-crv4-6mhj-j5jh - Exploit, Mitigation, Patch, Vendor Advisory
First Time Tox-dev
Tox-dev filelock
CPE cpe:2.3:a:tox-dev:filelock:*:*:*:*:*:python:*:*
CWE CWE-59

20 Oct 2026, 15:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-20 15:17

Updated : 2026-10-21 21:17


NVD link : CVE-2026-112914

Mitre link : CVE-2026-112914

CVE.ORG link : CVE-2026-112914


JSON object : View

Products Affected

tox-dev

  • filelock
CWE
CWE-363

Race Condition Enabling Link Following

CWE-59

Improper Link Resolution Before File Access ('Link Following')