CVE-2021-39115: Atlassian Jira Service Desk

High severity, CVSS 7.2. EPSS: 4.5% chance of exploitation in the next 30 days.

Affected versions of Atlassian Jira Service Management Server and Data Center allow remote attackers with "Jira Administrators" access to execute arbitrary Java code or run arbitrary system commands via a Server_Side Template Injection vulnerability in the Email Template feature. The affected versions are before version 4.13.9, and from version 4.14.0 before 4.18.0.

Affected products

• Atlassian Jira Service Desk: before 4.13.9 (fixed in 4.13.9)
• Atlassian Jira Service Management: from 4.14.0, before 4.18.0 (fixed in 4.18.0)

Published 2021-09-01. Last modified 2026-06-17.