{"id":"CVE-2026-112912","published":"2026-10-20T15:17:15.657","lastModified":"2026-10-21T21:18:18.623","description":"filelock is a platform-independent file lock for Python. From 3.32.6 until 4.2.1, SoftFileLock can follow a swapped symbolic link during the conditional os.access writability check for a node without its owner-write bit, allowing another local user on a platform and directory configuration that follows the link to infer whether a chosen path exists and is writable from the observable acquisition result. This issue is fixed in version 4.2.1.","cvssScore":2.5,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-59"],"vendors":["tox-dev"],"products":["filelock"],"references":[{"url":"https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a","tags":["Patch"]},{"url":"https://github.com/tox-dev/filelock/pull/835","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-9j6q-wvj5-jgjg","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]}],"exploitRefs":[{"url":"https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a","tags":["Patch"]},{"url":"https://github.com/tox-dev/filelock/pull/835","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-9j6q-wvj5-jgjg","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg","tags":["Exploit","Mitigation","Patch","Vendor Advisory"]}],"hasPoc":true,"ai":null}