DotCi Plugin 2.40.00 and earlier does not escape the GitHub user name parameter provided to commit notifications when displaying them in a build cause.

This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to submit crafted commit notifications to the /githook/ endpoint (see also SECURITY-2867).

This vulnerability is only exploitable in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier. See the LTS upgrade guide.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-41239
• https://www.jenkins.io/security/advisory/2022-09-21/#SECURITY-2884
• https://plugins.jenkins.io/DotCi/
• https://www.jenkins.io/security/plugins/#suspensions