Dashboard / CVE-2026-112935

CVE-2026-112935

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 24/100
Published: 2026-10-20 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

No Interaction Integ. Impact

CVSS Vector Breakdown

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

Description

filelock is a platform-independent file lock for Python. From 3.22.0 until 4.2.1, SoftFileLock can break a stale marker after an attacker frees its own marker following the stale read, an honest contender creates a live successor on the reused inode, and the successor's modification time is not newer than the saved observation, causing the live marker to be removed and two holders to be admitted. This issue is fixed in version 4.2.1.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
tox-dev filelock 3.22.0 – 4.2.1
tox-dev filelock >= 3.22.0, < 4.2.1

References & Advisories (4)

Bug Bounty Relevance

24 / 100
✓ No user interaction

CVSS Score

4.7 / 10.0 v3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS — Exploitation Probability

0.13%
Raw Score 0.001320
Percentile 2.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00132
2026-10-28
0.00132

Intelligence Sources

mitre ref →
nvd ref →

External Links