CVE-2026-112937

Published Oct 20, 2026

Last updated 19 hours ago

Overview

Description
filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, ReadWriteLock can remove a randomized .filelock-* private-hard-link directory during cleanup, allowing another local user with rename access in a non-sticky parent to observe a live name or forge a dead-owner sweep name and rename a sibling directory onto it for deletion. This issue is fixed in version 4.2.1.
Source
security-advisories@github.com
NVD status
Analyzed
Products
filelock

Risk scores

CVSS 3.1

Type
Secondary
Base score
6.1
Impact score
4.2
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Severity
MEDIUM

Weaknesses

security-advisories@github.com
CWE-367

Social media

Hype score
Not currently trending

Configurations