Various resources in Atlassian Confluence Server before version 6.4.2 allow remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the issuesURL parameter.
Severity
CVSS 3.0
6.1 medium
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)