CVE-2021-43945: [JRASERVER-73069] Stored XSS on /rest/jpo/1.0/hierarchyConfiguration via issueTypes parameter - CVE-2021-43945

Affected versions of Atlassian Jira Server and Data Center allow remote attackers with Roadmaps Administrator permissions to inject arbitrary HTML or JavaScript via a Stored Cross-Site Scripting (SXSS) vulnerability in the /rest/jpo/1.0/hierarchyConfiguration endpoint.

The affected versions are before version 8.20.3.

Affected versions:

• version < 8.20.3

Fixed versions:

• 8.20.3
• 8.21.0