{"id":"CVE-2026-112911","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112911","generatedAt":"2026-10-28T05:27:44.471Z","title":"From 3.30.0 until 4.2.1, StrictSoftFileLock versions from 3.30.0 and SoftReadWriteLock versions from 4.0.0 can adopt a protocol directory created first by another local user in a shared parent directory, allowing that user to alter protocol state and…","description":"filelock is a platform-independent file lock for Python. From 3.30.0 until 4.2.1, StrictSoftFileLock versions from 3.30.0 and SoftReadWriteLock versions from 4.0.0 can adopt a protocol directory created first by another local user in a shared parent directory, allowing that user to alter protocol state and admit concurrent holders. This issue is fixed in version 4.2.1.","published":"2026-10-20T15:17:15.000Z","lastModified":"2026-10-21T21:21:20.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H"},"cwe":["CWE-283"],"affected":["tox-dev/filelock"],"epss":{"score":0.00148,"percentile":0.03942,"date":"2026-10-27","history":[{"date":"2026-10-21","score":0.00094,"percentile":0.00569}]},"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 (0.15%). 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":"6.3","severity":"MEDIUM","publishedAt":"2026-10-20T15:17:15.473Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://github.com/tox-dev/filelock/commit/bfa066d65a1ba9106f86ee9d027f7588b9c77e03","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/tox-dev/filelock/pull/839","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-9c4x-gm8v-wgc4","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112911","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."}