CVE-2026-112934
filelock: SoftReadWriteLock holder refresh writes through a hard link and hangs on a named pipe that another local user renames over its record
- State
- Published
- Severity
- 6.1 Medium
- Published
- Oct 20, 2026
- Updated
- Oct 22, 2026
- Reserved
- Oct 19, 2026
Description
filelock is a platform-independent file lock for Python. From 4.0.0 until 4.2.1, SoftReadWriteLock refreshes holder records by name, allowing another local user with rename access to the lock directory to replace a record with a named pipe and stall the lock, or under a permissive hard-link policy to link a reachable target file and cause the lock user to write through it. This issue is fixed in version 4.2.1.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.1 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H | GitHub_M |
Weaknesses
- CWE-62 UNIX Hard Link
Affected Products
| Product | Versions |
|---|---|
filelocktox-dev |
|
References
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