CVE-2021-21619: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

May 24, 2022 (updated December 21, 2022)

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.

References

www.openwall.com/lists/oss-security/2021/02/24/3
github.com/advisories/GHSA-48hr-jg4p-w4p4
nvd.nist.gov/vuln/detail/CVE-2021-21619
www.jenkins.io/security/advisory/2021-02-24/

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