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VULNERABILITIES

CVE-2026-112940 Details

Description

filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock let SQLite reopen the database and side files by name; on POSIX systems an attacker with rename access in a non-sticky parent can swap those names to cause overwrite or unlink operations, while a writable adjacent hot journal is additionally required for attacker-chosen content overwrites. This issue is fixed in version 4.2.1.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://github.com/tox-dev/filelock/security/advisories/GHSA-v4x8-3wr5-3wq8 CISA-ADPExploitMitigationPatchVendor Advisory
https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d [email protected]Patch
https://github.com/tox-dev/filelock/pull/834 [email protected]Patch
https://github.com/tox-dev/filelock/releases/tag/4.2.1 [email protected]Release Notes
https://github.com/tox-dev/filelock/security/advisories/GHSA-v4x8-3wr5-3wq8 [email protected]ExploitMitigationPatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-59Improper Link Resolution Before File Access ('Link Following')[email protected]
CWE-363Race Condition Enabling Link Following[email protected]

Affected Products

ProductVersions
tox-dev filelock
>= 3.20.4, < 4.2.1

CPE

  • cpe:2.3:a:tox-dev:filelock:*:*:*:*:*:python:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-112940
NVD Published Date:
Oct 20, 2026
NVD Last Modified:
Oct 22, 2026
Source:
[email protected]
CVE-2026-112940 Details - Not Deferred