CVE-2019-20900

Name: CVE-2019-20900
Creator: NVD / NIST
Published: 2020-07-13T01:15:13.51+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2019-20900 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the Add Field module. The affected versions are before version 8.7.0.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the Add Field module. The affected versions are before version 8.7.0.

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

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Atlassian	Jira Data Center	>= 8.2.1, < 8.7.0
Atlassian	Jira Server	>= 8.2.1, < 8.7.0

References

https://jira.atlassian.com/browse/JRASERVER-70858Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-70858Vendor Advisory

Timeline

Published: Jul 13, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20900?

How severe is CVE-2019-20900?

CVE-2019-20900 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20900?

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-2019-20900?

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

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Source: NVD / NIST