CVE-2021-43944: Atlassian Jira Data Center

High severity, CVSS 7.2. EPSS: 2.3% chance of exploitation in the next 30 days.

This issue exists to document that a security improvement in the way that Jira Server and Data Center use templates has been implemented. Affected versions of Atlassian Jira Server and Data Center allowed remote attackers with system administrator permissions to execute arbitrary code via Template Injection leading to Remote Code Execution (RCE) in the Email Templates feature. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.

Affected products

• Atlassian Jira Data Center: before 8.13.15 (fixed in 8.13.15); from 8.14.0, before 8.20.3 (fixed in 8.20.3)
• Atlassian Jira Server: before 8.13.15 (fixed in 8.13.15); from 8.14.0, before 8.20.3 (fixed in 8.20.3)

Published 2022-03-08. Last modified 2026-06-17.