CVE-2021-39128

Name: CVE-2021-39128
Creator: NVD / NIST
Published: 2021-09-16T06:15:06.833+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.83%

Last modified Jun 17, 2026

CVE-2021-39128 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. EPSS estimates a 1.83% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.83%

76.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Atlassian	Jira Data Center	< 8.13.12
Atlassian	Jira Data Center	>= 8.14.0, < 8.19.1
Atlassian	Jira Server	< 8.13.12
Atlassian	Jira Server	>= 8.14.0, < 8.19.1

References

https://jira.atlassian.com/browse/JRASERVER-72804Issue Tracking, Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-72804Issue Tracking, Vendor Advisory

Timeline

Published: Sep 16, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39128?

How severe is CVE-2021-39128?

CVE-2021-39128 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.83% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39128?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39128?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST