CVE-2026-84360: CWE-288: Authentication Bypass Using an Alternate Path or Channel in 0xJacky nginx-ui
Description
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the HTTP configuration mutation routes require RequireSecureSession, but /mcp and /mcp_message require only ordinary authentication before exposing nginx_config_add and nginx_config_modify. An OTP-enabled user with a normal JWT but no valid X-Secure-Session-ID can therefore create or modify Nginx configuration and trigger reload behavior through MCP, bypassing the intended step-up control. This issue is fixed in version 2.4.1.
CVSS v3.1
Score 8.1high
Affected software
0xJacky
nginx-ui
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-01T16:27:58.128Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acd4ec92cdf04f656d63e59
Added to database: 10/12/2026, 21:19:05 UTC
Last updated: 10/12/2026, 21:19:05 UTC
Views: 1
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