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 Software Server and Data Center allow a system administrator to execute arbitrary code via a remote code execution in the Email Templates feature.
- version < 8.13.19,
- 8.14.0 ≤ version < 8.20.7,
- 8.21.0 ≤ version < 8.22.1,
- 8.23.0 ≤ version < 9.0.0