CVE-2026-42220: Nginxui Nginx UI

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.8, an authenticated user can call GET /api/settings and retrieve sensitive configuration values, including node.secret. The same node.secret is accepted by AuthRequired() through the X-Node-Secret header (or node_secret query parameter), causing the request to be treated as authenticated via the trusted-node path and associated with the init user. This issue has been patched in version 2.3.8.

Affected products

• Nginxui Nginx UI: before 2.3.8 (fixed in 2.3.8)

Published 2026-05-04. Last modified 2026-06-17.