CVE-2026-112934

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 37/100
Published: 2026-10-20 Modified: 2026-10-22 First seen: 2026-10-29 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: Low
A: High

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
tox-dev filelock 4.0.0 – 4.2.1

Bug Bounty Relevance

37 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

6.1 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

EPSS — Exploitation Probability

0.23%
Raw Score 0.002330
Percentile 14.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00233
2026-10-28
0.00233

Intelligence Sources

nvd ref →