[org.jenkins-ci.plugins:scriptler] Stored XSS vulnerability in Jenkins Scriptler Plugin

Scriptler Plugin 3.3 and earlier does not escape the name of scripts on the UI when asking to confirm their deletion.

This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create Scriptler scripts.

Scriptler Plugin 3.4 escapes the name of scripts on the UI when asking to confirm their deletion.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-21700
• https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2406
• http://www.openwall.com/lists/oss-security/2021/11/12/1
• https://github.com/advisories/GHSA-f9gf-2q87-5m44