CVE-2026-112911
filelock: StrictSoftFileLock and SoftReadWriteLock adopt a protocol directory another user created first, losing mutual exclusion
- State
- Published
- Severity
- 6.3 Medium
- Published
- Oct 20, 2026
- Updated
- Oct 28, 2026
- Reserved
- Oct 19, 2026
Description
filelock is a platform-independent file lock for Python. From 3.30.0 until 4.2.1, StrictSoftFileLock versions from 3.30.0 and SoftReadWriteLock versions from 4.0.0 can adopt a protocol directory created first by another local user in a shared parent directory, allowing that user to alter protocol state and admit concurrent holders. This issue is fixed in version 4.2.1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.3 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H | GitHub_M |
Weaknesses
- CWE-283 Unverified Ownership
Affected Products
| Product | Versions |
|---|---|
filelocktox-dev |
|
References
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