CVE-2021-43945: Atlassian Data Center

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

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 products

• Atlassian Data Center: before 8.20.3 (fixed in 8.20.3)
• Atlassian Jira: before 8.20.3 (fixed in 8.20.3)

Published 2022-02-28. Last modified 2026-06-17.