What is CVE-2019-3400?

CVE-2019-3400 is a medium-severity vulnerability in Atlassian Jira, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-05-03.

How severe is CVE-2019-3400?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Atlassian Jira

CVE-2019-3400

The labels gadget in Jira before version 7.13.2, and from version 8.0.0 before version 8.0.2 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the jql parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-05-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Atlassian Jira — versions unspecified, 8.0.0, unspecified
Atlassian Jira Server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

jira.atlassian.com/browse/JRASERVER-69245 (Issue Tracking, Vendor Advisory)
www.securityfocus.com/bid/108168 (vdb-entry, Broken Link)

Frequently asked questions

What is CVE-2019-3400?: CVE-2019-3400 is a medium-severity vulnerability in Atlassian Jira, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-05-03.
How severe is CVE-2019-3400?: Medium severity. CVSS v3 base score is 6.1 out of 10.