{"id":"CVE-2021-21620","aliases":["GHSA-4ffq-6g62-j4v4"],"url":"https://o3.security/vulnerability/CVE-2021-21620","summary":"Cross-Site Request Forgery in the Jenkins Claim plugin","details":"Jenkins Claim Plugin 2.18.1 and earlier does not require POST requests for the form submission endpoint assigning claims, resulting in a cross-site request forgery (CSRF) vulnerability.\n\nThis vulnerability allows attackers to change claims.\n\nJenkins Claim Plugin 2.18.2 requires POST requests for the affected HTTP endpoint.","published":"2021-02-24T16:15:15.053Z","modified":"2026-07-09T05:13:38.469836Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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":"https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%282%29"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21620"},{"type":"PACKAGE","url":"https://github.com/jenkinsci/claim-plugin"},{"type":"WEB","url":"https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20(2)"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T05:13:38.469836Z"}}