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CVE-2026-42222 - Vulnerability Analysis

HighCVSS: 8.1

Last Updated: May 4, 2026

Nginx UI - Authentication Bypass

Published: May 4, 2026Updated: May 4, 2026Remote Exploitable

Overview

Nginx UI 2.3.5 contains an unauthenticated bootstrap takeover caused by exposed POST /api/install endpoint during initial installation, letting unauthenticated attackers take control, exploit requires initial installation window.

Severity & Score

Severity: High

CVSS Score: 8.1

Impact

Unauthenticated attackers can take control of the system during initial installation, leading to full system compromise.

Mitigation

Update to the latest version when available.

References

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-mxqh-q9h6-v8pq

Related Resources

Vulnerability Intelligence Dashboard
Credential Scanner

Details

CVE ID: CVE-2026-42222
Severity: High
CVSS Score: 8.1
Type: broken_authentication
Status: new

CWE

CWE-284

CVSS Metrics

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H