Description
Jenkins Email Extension Plugin 2.93 and earlier does not escape, sanitize, or sandbox rendered email template output or log output generated during template rendering, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create or change custom email templates.
Remediation
References
https://www.jenkins.io/security/advisory/2023-02-15/#SECURITY-2934
http://www.openwall.com/lists/oss-security/2023/02/15/4