CVE-2026-42222— nginx-ui: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover
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I. Basic Information for CVE-2026-42222
Vulnerability Information
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Vulnerability Title
nginx-ui: Unauthenticated first-boot instance claim via POST /api/install allows remote bootstrap takeover
Source: NVD (National Vulnerability Database)
Vulnerability Description
Nginx UI is a web user interface for the Nginx web server. In version 2.3.5, an unauthenticated bootstrap takeover exists in nginx-ui during the initial installation window exposed by POST /api/install. At time of publication no public patches are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-42222
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · 0xJacky · 2026-05-04 · 5 CVEs total
| CVE-2026-42221 | 8.1 HIGH | nginx-ui: Unauthenticated First-Run Installer Allows Remote Initial Admin Claim |
| CVE-2026-42220 | 6.5 MEDIUM | nginx-ui: Authenticated settings disclosure exposes node.secret and enables trusted-node a |
| CVE-2026-42223 | 6.5 MEDIUM | nginx-ui: Settings API Exposes Protected Secrets |
| CVE-2026-42238 | Unauthenticated Remote Code Execution via Backup Restore in nginx-ui |
IV. Related Vulnerabilities
Same product: nginx-ui
- CVE-2026-42238
Unauthenticated Remote Code Execution via Backup Restore in - CVE-2026-42223
nginx-ui: Settings API Exposes Protected Secrets - CVE-2026-42221
nginx-ui: Unauthenticated First-Run Installer Allows Remote - CVE-2026-42220
nginx-ui: Authenticated settings disclosure exposes node.sec - CVE-2026-34403
Nginx-UI vulnerable to Cross-Site WebSocket Hijacking (CSWSH
Same vendor: 0xJacky
- CVE-2026-42238
Unauthenticated Remote Code Execution via Backup Restore in - CVE-2026-42223
nginx-ui: Settings API Exposes Protected Secrets - CVE-2026-42221
nginx-ui: Unauthenticated First-Run Installer Allows Remote - CVE-2026-42220
nginx-ui: Authenticated settings disclosure exposes node.sec - CVE-2026-34403
Nginx-UI vulnerable to Cross-Site WebSocket Hijacking (CSWSH
Same weakness: CWE-306
- CVE-2026-42302
FastGPT: Unauthenticated Remote Code Execution (RCE) via cod - CVE-2026-42176
Scoold: Persistent Admin Takeover by Overwriting the admins - CVE-2026-44338
PraisonAI ships and generates a legacy API server with authe - CVE-2026-6736
Authentication bypass vulnerability in GitHub Enterprise Ser - CVE-2026-7415
Open MQTT orchestration without read/write ACLs in Yarbo rob
V. Comments for CVE-2026-42222
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