What is CVE-2017-18039?

CVE-2017-18039 is a medium-severity vulnerability in Atlassian Jira, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-02.

How severe is CVE-2017-18039?

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

XSS in Atlassian Jira

CVE-2017-18039

The IncomingMailServers resource in Atlassian Jira from version 6.2.1 before version 7.4.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the messagesThreshold parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-02-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 64.7% 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 from 6.2.1 prior to 7.4.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.securityfocus.com/bid/103086 (VDB Entry, Third Party Advisory, vdb-entry)
jira.atlassian.com/browse/JRASERVER-66719 (Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2017-18039?: CVE-2017-18039 is a medium-severity vulnerability in Atlassian Jira, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-02.
How severe is CVE-2017-18039?: Medium severity. CVSS v3 base score is 6.1 out of 10.