CVE-2021-21619

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.

• CWE-79

• http://www.openwall.com/lists/oss-security/2021/02/24/3Mailing List, Third Party Advisory
• https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%281%29Vendor Advisory
• http://www.openwall.com/lists/oss-security/2021/02/24/3Mailing List, Third Party Advisory
• https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2188%20%281%29Vendor Advisory

Published

Feb 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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