{"id":"CVE-2026-112909","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112909","generatedAt":"2026-10-28T01:11:56.272Z","title":"filelock is a platform-independent file lock for Python.","description":"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.","published":"2026-10-20T15:17:15.000Z","lastModified":"2026-10-27T21:04:56.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"},"cwe":["CWE-706"],"affected":["tox-dev/filelock"],"epss":{"score":0.00212,"percentile":0.11433,"date":"2026-10-26","history":[{"date":"2026-10-21","score":0.00118,"percentile":0.01645}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-20T15:17:15.000Z","detail":{"score":"6.1","severity":"MEDIUM","publishedAt":"2026-10-20T15:17:15.313Z"},"summary":"New CVE, medium severity (CVSS 6.1)."}],"references":[{"url":"https://github.com/tox-dev/filelock/commit/e1e825b1992f69fb6b346dc395d5ae4893536c0a","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/tox-dev/filelock/pull/835","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/tox-dev/filelock/releases/tag/4.2.1","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-69hj-f68j-2879","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/tox-dev/filelock/security/advisories/GHSA-69hj-f68j-2879","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112909","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}