CVE-2026-112914

5.3 MEDIUMpublic exploit available

Published 2026-10-20 · Updated 2026-10-21

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

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.

CVSS vector

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

Weaknesses

CWE-363, CWE-59

Vendors

tox-dev

Products

filelock

Public exploit & PoC references

https://github.com/tox-dev/filelock/commit/740ff666b62a88496c8d7394e4e6230605e4d62b[Patch]
https://github.com/tox-dev/filelock/pull/843[Patch]
https://github.com/tox-dev/filelock/releases/tag/4.2.1[Release Notes]
https://github.com/tox-dev/filelock/security/advisories/GHSA-crv4-6mhj-j5jh[Exploit, Mitigation, Patch, Vendor Advisory]

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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