What’s Vulnerable › Vulnerabilities

CVE-2021-39128

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-16 · updated 2026-06-17
• Weakness: CWE-1336

Description

Affected versions of Atlassian Jira Server or Data Center using the Jira Service Management addon allow remote attackers with JIRA Administrators access to execute arbitrary Java code via a server-side template injection vulnerability in the Email Template feature. The affected versions of Jira Server or Data Center are before version 8.13.12, and from version 8.14.0 before 8.19.1.

Affected products

• Atlassian Jira: before 8.13.12; from 8.14.0 before 8.19.1 — fixed in 8.13.12, 8.19.1
• Atlassian Jira: before 8.13.12; from 8.14.0 before 8.19.1 — fixed in 8.13.12, 8.19.1

How to fix

Upgrade to a fixed version: Atlassian Jira 8.13.12, 8.19.1; Atlassian Jira 8.13.12, 8.19.1. Check the vendor advisory for mitigations.

References

• https://jira.atlassian.com/browse/JRASERVER-72804
• https://jira.atlassian.com/browse/JRASERVER-72804

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