{"schema":"threatline.record/2","record":{"id":"CVE-2026-112909","aliases":["GHSA-69hj-f68j-2879"],"summary":"filelock: UnixFileLock truncates and chmods any regular file another user renames or hard-links onto the lock path","details":"filelock is a platform-independent file lock for Python. Prior to 4.2.1, UnixFileLock can truncate a regular file renamed onto the lock path when another local user has actual rename permission, or hard-linked there under a permissive hard-link policy; when an explicit mode is requested, affected versions from 3.10.2 can also change that file's mode. This issue is fixed in version 4.2.1.","categories":["Unclassified"],"product":"filelock","vendor":"tox-dev","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-112909","source_modified_at":"2026-10-22T21:25:25.906Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"filelock","vendor":"tox-dev","versions":[{"version":"< 4.2.1","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":6.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00118,"percentile":0.01649,"score_date":"2026-10-23"},"published_at":"2026-10-20T14:16:02.317Z","modified_at":"2026-10-22T21:25:25.906Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-112909","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T21:25:25.906Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112909","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-69hj-f68j-2879","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/tox-dev/filelock/pull/835","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/tox-dev/filelock/releases/tag/4.2.1","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-22T21:24:59.918929Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-22T21:25:25.906Z","content_hash":"a901cd415f1f4beee64f1c6db47fa0f572deb22bbd1d128ff703d2ac4f26150a"}}