{"id":"CVE-2021-21673","details":"Jenkins CAS Plugin 1.6.0 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins, allowing attackers to perform phishing attacks.","aliases":["GHSA-2vvr-5757-qp87"],"modified":"2026-07-08T21:25:44.968881Z","published":"2021-06-30T17:15:09.160Z","references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/06/30/1"},{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2387"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jenkinsci/cas-plugin","events":[{"introduced":"0"},{"last_affected":"1eb260f65e6fa43290aad220bd4ac334c1948585"}],"database_specific":{"cpe":"cpe:2.3:a:jenkins:cas:*:*:*:*:*:jenkins:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"1.6.0"}],"source":"CPE_RANGE"}}],"versions":["cas-plugin-1.6.0","cas-plugin-1.5.0","cas-plugin-1.4.3","cas-plugin-1.4.2","cas-plugin-1.4.1","cas-plugin-1.4.0","cas-plugin-1.3.0","cas-plugin-1.2.0","cas-plugin-1.1.2","cas-plugin-1.1.1","cas-plugin-1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21673.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}