CVE-2021-26070: Atlassian Data Center

High severity, CVSS 7.2. EPSS: 2% chance of exploitation in the next 30 days.

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to evade behind-the-firewall protection of app-linked resources via a Broken Authentication vulnerability in the `makeRequest` gadget resource. The affected versions are before version 8.13.3, and from version 8.14.0 before 8.14.1.

Affected products

• Atlassian Data Center: before 8.13.3 (fixed in 8.13.3); from 8.14.0, before 8.14.1 (fixed in 8.14.1)
• Atlassian Jira: before 8.13.3 (fixed in 8.13.3)
• Atlassian Jira Server: from 8.14.0, before 8.14.1 (fixed in 8.14.1)

Published 2021-03-22. Last modified 2026-06-17.