Jenkins Email Extension Plugin 2.93 and earlier does not escape various fields included in bundled email templates, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to control affected fields.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-25763
• https://www.jenkins.io/security/advisory/2023-02-15/#SECURITY-2931
• http://www.openwall.com/lists/oss-security/2023/02/15/4
• jenkinsci/email-ext-plugin@ebfb974