CVE-2020-2207: Jenkins Vncviewer

Medium severity, CVSS 6.1. EPSS: 0.9% chance of exploitation in the next 30 days.

Jenkins VncViewer Plugin 1.7 and earlier does not escape a parameter value in the checkVncServ form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.

Affected products

• Jenkins Vncviewer: up to and including 1.7

Published 2020-07-02. Last modified 2026-06-17.