What is CVE-2017-18104?

CVE-2017-18104 is a medium-severity vulnerability in Atlassian Jira, classified under Information Disclosure. CVSS score: 5.9/10. Published 2018-07-24.

How severe is CVE-2017-18104?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Information disclosure in Atlassian Jira

CVE-2017-18104

The Webhooks component of Atlassian Jira before version 7.6.7 and from version 7.7.0 before version 7.11.0 allows remote attackers who are able to observe or otherwise intercept webhook events to learn information about changes in issues that should not be sent because they are not contained within the results of a specified JQL query.

Vulnerability class: Information Disclosure

Published 2018-07-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.016 (74.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Atlassian Jira — versions unspecified, 7.7.0
Atlassian Jira Server

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

jira.atlassian.com/browse/JRASERVER-59980 (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2017-18104?: CVE-2017-18104 is a medium-severity vulnerability in Atlassian Jira, classified under Information Disclosure. CVSS score: 5.9/10. Published 2018-07-24.
How severe is CVE-2017-18104?: Medium severity. CVSS v3 base score is 5.9 out of 10.