{"id":"CVE-2021-21616","aliases":["GHSA-4f6x-g5vh-8jm5"],"url":"https://o3.security/vulnerability/CVE-2021-21616","summary":"Stored XSS vulnerability in Jenkins Active Choices Plugin","details":"Jenkins Active Choices Plugin 2.5.2 and earlier does not escape reference parameter values.\n\nThis results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.\n\nJenkins Active Choices Plugin 2.5.3 escapes reference parameter values.","published":"2021-02-24T16:15:14.663Z","modified":"2026-07-09T05:13:37.114560Z","cvss":{"score":4.6,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"},"epss":{"score":0.78819,"percentile":0.99574,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.biouno:uno-choice","fixedVersion":"2.5.3"}],"fix":{"url":"https://github.com/jenkinsci/active-choices-plugin/commit/d0b768c18bafd812b52fe579def8b14e26033ec9","label":"jenkinsci/active-choices-plugin@d0b768c"},"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-2192"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21616"},{"type":"WEB","url":"https://github.com/jenkinsci/active-choices-plugin/commit/d0b768c18bafd812b52fe579def8b14e26033ec9"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/active-choices-plugin"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T05:13:37.114560Z"}}