{"id":"CVE-2019-19271","details":"An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. A wrong iteration variable, used when checking a client certificate against CRL entries (installed by a system administrator), can cause some CRL entries to be ignored, and can allow clients whose certificates have been revoked to proceed with a connection to the server.","modified":"2026-08-07T15:18:15.404240Z","published":"2019-11-26T04:15:13.013Z","references":[{"type":"FIX","url":"https://github.com/proftpd/proftpd/issues/860"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/proftpd/proftpd","events":[{"introduced":"0"},{"fixed":"14f155e2f194f75d05a1656d13f4228257ba3091"}],"database_specific":{"cpe":"cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.3.6"}],"source":"CPE_RANGE"}}],"versions":["v1.3.6d","v1.3.6c","v1.3.6b","v1.3.6a","v1.3.6","v1.3.6rc4","v1.3.6rc3","v1.3.6rc2","v1.3.6rc1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19271.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"}]}