{"id":"CVE-2021-21620","aliases":["EUVD-2021-1259","GHSA-4ffq-6g62-j4v4"],"status":"published","title":"Cross-Site Request Forgery in the Jenkins Claim plugin","description":"A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01635,"percentile":0.76645,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-352"],"published":"2021-02-24T15:05:30Z","modified":"2026-10-24T10:30:36Z","fixes":[{"ecosystem":"Maven","package":"org.jenkins-ci.plugins:claim","fixed_in":["2.18.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.jenkins-ci.plugins:claim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.18.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.jenkins-ci.plugins:claim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.18.2"}]}],"versions":["2.0","2.1","2.10","2.11","2.12","2.13.1","2.14","2.14.1","2.15","2.16","2.17","2.18","2.18.1","2.2","2.3","2.5","2.6","2.7","2.8","2.9"]}],"products":[{"vendor":"jenkins","product":"claim"},{"vendor":"jenkins project","product":"jenkins claim plugin"}],"references":[{"url":"https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%282%29","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21620","tags":["advisory"]},{"url":"https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20(2)","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4ffq-6g62-j4v4"},{"url":"https://github.com/jenkinsci/claim-plugin","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-21620","description":"A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.","status":"published","published":"2021-02-24T15:05:30Z","modified":"2024-08-03T18:16:23.76Z","updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-1259","description":"A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.","status":"published","published":"2021-02-24T15:05:30Z","modified":"2024-08-03T18:16:23Z","updated_at":"2026-11-03T03:25:05.745586Z"}],"ghsa":[{"id":"GHSA-4ffq-6g62-j4v4","title":"Cross-Site Request Forgery in the Jenkins Claim plugin","description":"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.","status":"published","published":"2021-06-16T17:29:43Z","modified":"2023-10-27T13:36:43Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:37:10.053831Z"}],"nvd":[{"id":"CVE-2021-21620","description":"A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.","status":"published","published":"2021-02-24T16:15:15.053Z","modified":"2026-06-17T03:35:53.127Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:06:50.031227Z"}],"osv":[{"id":"CVE-2021-21620","description":"A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.","status":"published","published":"2021-02-24T16:15:15.053Z","modified":"2026-10-24T10:30:36.320654086Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.367807Z"},{"id":"GHSA-4ffq-6g62-j4v4","title":"Cross-Site Request Forgery in the Jenkins Claim plugin","description":"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.","status":"published","published":"2021-06-16T17:29:43Z","modified":"2024-02-16T08:19:28.989462Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T15:46:36.782754Z"}]}}