5.4
Medium
CVE-2026-84677 Jenkins update-center2 3.18.3 and earlier does not escape plugin-provided values (plugin names, descriptions, and…
Description
Jenkins update-center2 3.18.3 and earlier does not escape plugin-provided values (plugin names, descriptions, and version metadata) on plugin download index pages, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide a plugin for hosting.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Jenkins update-center2 3.18 | earliest → 3.18.3 | No fix stated |