CVE-2021-39111

Name: CVE-2021-39111
Creator: NVD / NIST
Published: 2021-08-30T07:15:06.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.98%

Last modified Jun 17, 2026

CVE-2021-39111 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The Editor plugin in Atlassian Jira Server and Data Center before version 8.5.18, from 8.6.0 before 8.13.10, and from version 8.14.0 before 8.18.2 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in the handling of supplied content such as from a PDF when pasted into a field such as the description field.. EPSS estimates a 0.98% chance of exploitation in the next 30 days.

Description

The Editor plugin in Atlassian Jira Server and Data Center before version 8.5.18, from 8.6.0 before 8.13.10, and from version 8.14.0 before 8.18.2 allows remote attackers to inject arbitrary HTML or JavaScript via a Cross-Site Scripting (XSS) vulnerability in the handling of supplied content such as from a PDF when pasted into a field such as the description field.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.98%

57.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Atlassian	Data Center	< 8.5.18
Atlassian	Jira	< 8.5.18
Atlassian	Jira Data Center	>= 8.6.0, < 8.13.10
Atlassian	Jira Data Center	>= 8.14.0, < 8.18.2
Atlassian	Jira Server	>= 8.6.0, < 8.13.10
Atlassian	Jira Server	>= 8.14.0, < 8.18.2

References

https://jira.atlassian.com/browse/JRASERVER-72716Issue Tracking, Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-72716Issue Tracking, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-39111?

How severe is CVE-2021-39111?

CVE-2021-39111 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.98% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39111?

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-2021-39111?

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

Scan your code now

Source: NVD / NIST