[org.jenkins-ci.main:jenkins-core] Stored XSS vulnerability in Jenkins upstream cause

Jenkins 2.244 and earlier, LTS 2.235.1 and earlier does not escape the upstream job’s display name shown as part of a build cause, resulting in a stored cross-site scripting vulnerability.

Jenkins 2.245, LTS 2.235.2 escapes the job display name.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-2221
• https://jenkins.io/security/advisory/2020-07-15/#SECURITY-1901
• http://www.openwall.com/lists/oss-security/2020/07/15/5
• https://github.com/advisories/GHSA-g4j6-m3m3-crw8