CVE-2026-112940

7.1 HIGHpublic exploit available

Published 2026-10-20 · Updated 2026-10-22

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

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

Weaknesses

CWE-363, CWE-59

Vendors

tox-dev

Products

filelock

Public exploit & PoC references

https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d[Patch]
https://github.com/tox-dev/filelock/pull/834[Patch]
https://github.com/tox-dev/filelock/releases/tag/4.2.1[Release Notes]
https://github.com/tox-dev/filelock/security/advisories/GHSA-v4x8-3wr5-3wq8[Exploit, Mitigation, Patch, Vendor Advisory]
https://github.com/tox-dev/filelock/security/advisories/GHSA-v4x8-3wr5-3wq8[Exploit, Mitigation, Patch, Vendor Advisory]

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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