CVE-2021-21684

Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.

• CWE-116

• http://www.openwall.com/lists/oss-security/2021/10/06/1Mailing List, Third Party Advisory
• https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2499Vendor Advisory
• http://www.openwall.com/lists/oss-security/2021/10/06/1Mailing List, Third Party Advisory
• https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2499Vendor Advisory

Published

Oct 6, 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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