Affected versions of Atlassian Jira Server and Data Center allow remote attackers with administrator privileges to execute arbitrary code via a Remote Code Execution (RCE) vulnerability in the Email Templates feature.

This issue bypasses the fix of https://jira.atlassian.com/browse/JSDSERVER-8665.

This issue was discovered by tuo4n8 from RedTeam@VNG Corporation.

The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.

Affected versions:

• version < 8.13.15
• 8.14.0 ≤ version < 8.20.3

Fixed versions:

• 8.13.15
• 8.20.3
• 8.21.0