Medium (6.1). EPSS 4.8% chance of exploitation in the next 30 days. Fixed in @novnc/novnc 0.6.2.
An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages propagated to the status field, such as the VNC server name.
Severity
CVSS 3.1
6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
4.8% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)