MediumVulnerabilityCVE-2026-112909updated 28 Oct 2026, 21:08 UTC
filelock: UnixFileLock truncates and chmods any regular file another user renames or hard-links onto the lock path
Fixed in filelock 4.2.1Official source
| Severity | MediumCVSS 6.1 of 10 |
|---|---|
| Being exploited? | UnclearNo reports either way yet |
| Fix available? | Yesfilelock 4.2.1 · since 28 Oct 2026 |
| How sure is this? | Official sourceBacked by an official source |
Are you affected?
| Package / product | Affected versions | Fixed in |
|---|---|---|
| filelock · pip | <= 4.2.0 | 4.2.1 |
Timeline
- 28 Oct 2026, 21:08 UTCPublicly disclosed
- 28 Oct 2026, 21:08 UTCReported by GitHub Advisory · GitHub Advisory
- 28 Oct 2026, 21:08 UTCPicked up by Zero Radar
Sources 1 report, oldest first
Official vendor, government CERT or advisory database
- filelock: UnixFileLock truncates and chmods any regular file another user renames or hard-links onto the lock pathGitHub Advisory · 28 Oct 2026, 21:08 UTC
Technical details
- ID
- CVE-2026-112909 · GHSA-69hj-f68j-2879
- CVSS
- 6.1 / 10
- EPSS
- 0.2% chance of exploitation within 30 days
- Disclosed
- 28 Oct 2026, 21:08 UTC
- On Zero Radar
- 28 Oct 2026, 21:08 UTC (0 min after disclosure)
- Last change
- 28 Oct 2026, 21:08 UTC
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