{"id":"CVE-2026-112915","published":"2026-10-20T15:17:15.953","lastModified":"2026-10-21T21:15:34.300","description":"filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock can open a crafted SQLite lock database without bounding schema and query work, allowing another local user who can replace the database to make acquisition stall or hang; versions from 3.20.4 expose this on initial per-instance opening, and versions from 3.30.0 repeat the exposure on every acquisition. This issue is fixed in version 4.2.1.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-400"],"vendors":["tox-dev"],"products":["filelock"],"references":[{"url":"https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d","tags":["Patch"]},{"url":"https://github.com/tox-dev/filelock/pull/834","tags":["Patch"]},{"url":"https://github.com/tox-dev/filelock/releases/tag/4.2.1","tags":["Release Notes"]},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-cwqr-hh33-gh44","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-cwqr-hh33-gh44","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]}],"exploitRefs":[{"url":"https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d","tags":["Patch"]},{"url":"https://github.com/tox-dev/filelock/pull/834","tags":["Patch"]},{"url":"https://github.com/tox-dev/filelock/releases/tag/4.2.1","tags":["Release Notes"]},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-cwqr-hh33-gh44","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-cwqr-hh33-gh44","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]}],"hasPoc":true,"ai":null}