CVE-2026-42221
Nginx-UI: Unauthenticated First-Run Installer Allows Remote Initial Admin Claim
Sévérité par source
Le label propre à Trivy est CRITICAL. Critique selon NVD. Plus basse selon GHSA (élevée).
Description
Nginx UI is a web user interface for the Nginx web server. From version 2.0.0 to before version 2.3.8, an unauthenticated network attacker can claim the initial administrator account on a fresh nginx-ui instance during the first-run setup window. The public /api/install endpoint is reachable without authentication, and the request-encryption flow only protects payload confidentiality in transit; it does not authenticate who is allowed to perform installation. A remote attacker who reaches the service before the legitimate operator can set the admin email, username, and password, causing permanent initial-instance takeover. This issue has been patched in version 2.3.8.
Paquets affectés et versions corrigées
| Source | Paquet | Corrigé en |
|---|---|---|
| go::GitHub Security Advisory Go | github.com/0xJacky/Nginx-UI | 2.3.8 |