{"cve":"CVE-2021-21619","nvd":{"published":"2021-02-24T16:15:14.983","modified":"2026-06-17T03:35:53.027","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["http://www.openwall.com/lists/oss-security/2021/02/24/3","https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%281%29","http://www.openwall.com/lists/oss-security/2021/02/24/3","https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%281%29"],"products":["jenkins:claim"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-21619","score":0.0939,"percentile":0.95406,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-48hr-jg4p-w4p4","url":"https://osv.dev/vulnerability/GHSA-48hr-jg4p-w4p4","summary":"XSS vulnerability in Jenkins Claim Plugin","modified":"2024-02-16T08:13:27.631008Z","packages":[{"ecosystem":"Maven","name":"org.jenkins-ci.plugins:claim","purl":"pkg:maven/org.jenkins-ci.plugins/claim","ranges":["<2.18.2"],"fixed":["2.18.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}