{"affected":[{"product":"filelock","source":"CNA: GitHub_M","vendor":"tox-dev","versions":[{"status":"affected","version":">= 3.22.0, < 4.2.1"}]},{"defaultStatus":"unaffected","ecosystem":"PyPI","packageName":"filelock","product":"filelock","source":"OSV GHSA-567q-5qvw-pf92","vendor":"","versions":[{"status":"affected","version":"3.22.0","versionType":"PyPI"},{"status":"affected","version":"3.23.0","versionType":"PyPI"},{"status":"affected","version":"3.24.0","versionType":"PyPI"},{"status":"affected","version":"3.24.1","versionType":"PyPI"},{"status":"affected","version":"3.24.2","versionType":"PyPI"},{"status":"affected","version":"3.24.3","versionType":"PyPI"},{"status":"affected","version":"3.25.0","versionType":"PyPI"},{"status":"affected","version":"3.25.1","versionType":"PyPI"},{"status":"affected","version":"3.25.2","versionType":"PyPI"},{"status":"affected","version":"3.28.0","versionType":"PyPI"},{"status":"affected","version":"3.29.0","versionType":"PyPI"},{"status":"affected","version":"3.29.1","versionType":"PyPI"},{"status":"affected","version":"3.29.2","versionType":"PyPI"},{"status":"affected","version":"3.29.3","versionType":"PyPI"},{"status":"affected","version":"3.29.4","versionType":"PyPI"},{"status":"affected","version":"3.29.5","versionType":"PyPI"},{"status":"affected","version":"3.29.6","versionType":"PyPI"},{"status":"affected","version":"3.29.7","versionType":"PyPI"},{"status":"affected","version":"3.30.0","versionType":"PyPI"},{"status":"affected","version":"3.30.1","versionType":"PyPI"},{"status":"affected","version":"3.30.2","versionType":"PyPI"},{"status":"affected","version":"3.30.3","versionType":"PyPI"},{"status":"affected","version":"3.31.0","versionType":"PyPI"},{"status":"affected","version":"3.31.1","versionType":"PyPI"},{"status":"affected","version":"3.31.2","versionType":"PyPI"},{"status":"affected","version":"3.32.0","versionType":"PyPI"},{"status":"affected","version":"3.32.2","versionType":"PyPI"},{"status":"affected","version":"3.32.3","versionType":"PyPI"},{"status":"affected","version":"3.32.4","versionType":"PyPI"},{"status":"affected","version":"3.32.5","versionType":"PyPI"},{"status":"affected","version":"3.32.6","versionType":"PyPI"},{"status":"affected","version":"3.32.7","versionType":"PyPI"},{"status":"affected","version":"4.0.0","versionType":"PyPI"},{"status":"affected","version":"4.0.1","versionType":"PyPI"},{"status":"affected","version":"4.0.10","versionType":"PyPI"},{"status":"affected","version":"4.0.11","versionType":"PyPI"},{"status":"affected","version":"4.0.12","versionType":"PyPI"},{"status":"affected","version":"4.0.2","versionType":"PyPI"},{"status":"affected","version":"4.0.3","versionType":"PyPI"},{"status":"affected","version":"4.0.4","versionType":"PyPI"},{"status":"affected","version":"4.0.5","versionType":"PyPI"},{"status":"affected","version":"4.0.6","versionType":"PyPI"},{"status":"affected","version":"4.0.7","versionType":"PyPI"},{"status":"affected","version":"4.0.8","versionType":"PyPI"},{"status":"affected","version":"4.0.9","versionType":"PyPI"},{"status":"affected","version":"4.1.0","versionType":"PyPI"},{"status":"affected","version":"4.1.1","versionType":"PyPI"},{"status":"affected","version":"4.1.2","versionType":"PyPI"},{"status":"affected","version":"4.2.0","versionType":"PyPI"},{"events":[{"introduced":"3.22.0"},{"fixed":"4.2.1"}],"status":"unknown","version":"3.22.0","versionType":"ECOSYSTEM"}]}],"cveId":"CVE-2026-112907","cwes":["CWE-667"],"description":"filelock is a platform-independent file lock for Python. From 3.22.0 until 4.2.1, soft lock classes on Windows read an existing marker with _read_lock_file and remove a stale marker through break_lock_file using pathname operations that wait for an oplock break. Another local account with read access to an unheld marker can keep a Level 1 or batch oplock unanswered, causing SoftFileLock.acquire and related async or fallback locks to wait beyond timeout, blocking=False, and cancel_check. A stale marker under the oplock cannot be broken, but mutual exclusion remains intact and no file other than the marker is accessed. This issue is fixed in version 4.2.1.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":2.5,"severity":"low","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1793915404632,"publishedAt":1793915404632,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-567q-5qvw-pf92"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/pull/835"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/commit/97d694a9a3ee1721d6c79a480174dfd9b060a080"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/tox-dev/filelock/releases/tag/4.2.1"},{"source":"OSV / GitHub Security Advisories","tags":["advisory"],"url":"https://github.com/advisories/GHSA-567q-5qvw-pf92"},{"source":"OSV / GitHub Security Advisories","tags":["osv"],"url":"https://osv.dev/vulnerability/GHSA-567q-5qvw-pf92"}],"remediation":[{"kind":"fix","source":"OSV GHSA-567q-5qvw-pf92","text":"filelock (PyPI): OSV reports a fixed version 4.2.1. Check the advisory for supported release branches.","url":"https://github.com/advisories/GHSA-567q-5qvw-pf92"}],"revision":"c3c7f4d763ccb1123e711b5c7fb34b9135de5654a842f9fb6a92e5f062b55e1a","sources":[{"modifiedAt":1793915404632,"name":"CNA: GitHub_M","retrievedAt":1793916777478,"url":"https://www.cve.org/CVERecord?id=CVE-2026-112907"},{"modifiedAt":1792795503452,"name":"OSV / GitHub Security Advisories","retrievedAt":1793916778099,"url":"https://osv.dev/vulnerability/GHSA-567q-5qvw-pf92"}],"ssvc":null,"status":"published","title":"filelock: On Windows an oplock on a soft lock's marker holds SoftFileLock.acquire() past its timeout and blocks the stale break","updatedAt":1793916778099}