{"schema":"threatline.record/2","record":{"id":"CVE-2026-112912","aliases":["GHSA-9j6q-wvj5-jgjg"],"summary":"filelock: Symlink swap during SoftFileLock's writability check leaks whether a path exists and is writable by the lock taker","details":"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.","categories":["Unclassified"],"product":"filelock","vendor":"tox-dev","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-112912","source_modified_at":"2026-10-20T15:37:56.208Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"filelock","vendor":"tox-dev","versions":[{"version":">= 3.32.6, < 4.2.1","status":"affected"}],"defaultStatus":null},{"source":"GitHub Advisory Database","source_url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg","source_modified_at":"2026-10-20T14:22:15Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"pip","name":"filelock"},"range":">= 3.32.6, <= 4.2.0"}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg","source_modified_at":"2026-10-20T14:22:15Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"ecosystem":"pip","name":"filelock"},"version":"4.2.1"}],"cvss":2.5,"severity":"Low","kev":{"listed":false},"epss":{"probability":0.00213,"percentile":0.11055,"score_date":"2026-10-23"},"published_at":"2026-10-20T14:23:18.993Z","modified_at":"2026-10-20T15:37:56.208Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-112912","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T15:37:56.208Z"},{"source":"GitHub Advisory Database","url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-20T14:22:15Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112912","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","GitHub Advisory Database","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-9j6q-wvj5-jgjg","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":"2026-10-20T15:37:27.795354Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-20T15:37:56.208Z","content_hash":"8ebff86aa9e8aa5079df96afa36d39b508a1a8b29ceeae3e6293f68bd787890d"}}