CVE-2021-39115

Name: CVE-2021-39115
Creator: NVD / NIST
Published: 2021-09-01T23:15:07.43+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 4.48%

Last modified Jun 17, 2026

CVE-2021-39115 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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.. EPSS estimates a 4.48% chance of exploitation in the next 30 days.

Description

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.

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

4.48%

90.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Atlassian	Jira Service Desk	< 4.13.9
Atlassian	Jira Service Management	>= 4.14.0, < 4.18.0

References

https://jira.atlassian.com/browse/JSDSERVER-8665Third Party Advisory
https://jira.atlassian.com/browse/JSDSERVER-8665Third Party Advisory

Timeline

Published: Sep 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39115?

How severe is CVE-2021-39115?

CVE-2021-39115 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 4.48% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39115?

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-2021-39115?

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

Scan your code now

Source: NVD / NIST