CVE-2026-112908: tox-dev filelock · Incorrect Permissions
Affects tox-dev filelockSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.2.1 when convenient.
Data as of 5 Nov 2026, 22:21 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 5.3 |
|---|
- Patch
- Available – fixed in 4.2.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:LExploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade tox-dev filelock to 4.2.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| tox-devfilelock | Affected
| Fixed in
|
AI-suggested
Upgrade to filelock version 4.2.1 or later, where the issue is fixed. No other mitigation is indicated by the vendor advisory.
Description
A vulnerability in the tox-dev filelock Python library versions 3.30.0 through 4.2.0 allows incorrect permission assignment for critical resource directories on POSIX systems. This flaw permits other local users to delete active lock claims or plant malformed claims, potentially disrupting lock acquisition. The issue is fixed in version 4.2.1.
References
- github.com/tox-dev/filelock/security/advisories/GHSA-6627-m3xw-93mp (opens in a new tab)
- github.com/tox-dev/filelock/pull/839 (opens in a new tab)
- github.com/tox-dev/filelock/commit/8cf51802158b9cf7e1fc560c2da30491a662cfde (opens in a new tab)
- github.com/tox-dev/filelock/commit/bfa066d65a1ba9106f86ee9d027f7588b9c77e03 (opens in a new tab)
- github.com/tox-dev/filelock/releases/tag/4.2.1 (opens in a new tab)