{"id":"CVE-2021-21619","aliases":["GHSA-48hr-jg4p-w4p4"],"url":"https://o3.security/vulnerability/CVE-2021-21619","summary":"XSS vulnerability in Jenkins Claim Plugin","details":"Jenkins Claim Plugin 2.18.1 and earlier does not escape the user display name, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers who are able to control the display names of Jenkins users, either via the security realm, or directly inside Jenkins.","published":"2021-02-24T16:15:14.983Z","modified":"2026-07-08T21:26:51.872227Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:claim","fixedVersion":"2.18.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/02/24/3"},{"type":"ADVISORY","url":"https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%281%29"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T21:26:51.872227Z"}}