CVE-2026-112936 | BDVDB-2026-393149 Detail

tox-devfilelock

Description#

filelock is a platform-independent file lock for Python. From 3.20.4 until 4.0.9, ReadWriteLock and AsyncReadWriteLock versions from 3.20.4 resolve the lock path and pass it to SQLite without rejecting a final symbolic link, allowing another local user who can create names in the lock directory to redirect database creation and locking or split mutual exclusion between targets. This issue is fixed in version 4.0.9.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact low. Attack vector: local.

Weaknesses#

CWE-59 Improper Link Resolution Before File Access ('Link Following')
CWE-668 Exposure of Resource to Wrong Sphere

References#

Exploit#

No public exploit known

History#

Version 12026-10-20Record published in the CVE List.

Published

Published: 2026-10-20
Last modified: 2026-10-20

Vendor information

Vendor: tox-dev
Product: filelock

All tox-dev vulnerabilities

Score

6.1 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 14.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 3.20.4, < 4.0.9
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.1 Medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).