CVE-2021-39117

Name: CVE-2021-39117
Creator: NVD / NIST
Published: 2021-08-30T07:15:06.783+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2021-39117 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. The AssociateFieldToScreens page in Atlassian Jira Server and Data Center before version 8.18.0 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability via the name of a custom field.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

The AssociateFieldToScreens page in Atlassian Jira Server and Data Center before version 8.18.0 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability via the name of a custom field.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

0.64%

45.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Atlassian	Data Center	< 8.18.0
Atlassian	Jira	< 8.18.0

References

https://jira.atlassian.com/browse/JRASERVER-72597Issue Tracking, Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-72597Issue Tracking, Vendor Advisory

Timeline

Published: Aug 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39117?

How severe is CVE-2021-39117?

CVE-2021-39117 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39117?

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-2021-39117?

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

Scan your code now

Source: NVD / NIST