CVE-2017-18084: Atlassian Confluence

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

The usermacros resource in Atlassian Confluence Server before version 6.3.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability through the description of a macro.

Affected products

• Atlassian Confluence: before 6.3.4 (fixed in 6.3.4)

Published 2018-02-02. Last modified 2026-06-17.