{"id":"AZL-112711","summary":"CVE-2026-112910 affecting package python-filelock 3.20.3-4","details":"filelock is a platform-independent file lock for Python. From 3.10.0 until 4.2.1, filelock on Windows ignores the mode argument for WindowsFileLock files and the ReadWriteLock SQLite database. A lock created with mode=0o600 receives the parent directory's inheritable ACL because _open_non_reparse_fd and _nt_open do not create an owner-only security descriptor. Another local account with inherited access can read holder metadata or the lock database, modify those files where the ACL permits writes, or take the byte-range lock after release and delay later acquisitions. UnixFileLock is not affected, and mutual exclusion between cooperating processes continues to hold. This issue is fixed in version 4.2.1.","modified":"2026-11-06T14:17:03.916770106Z","published":"2026-11-05T22:17:46Z","upstream":["CVE-2026-112910"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112910"}],"affected":[{"package":{"name":"python-filelock","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python-filelock"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.20.3-4"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-112711.json"}}],"schema_version":"1.9.2"}