CVE-2026-84360

CVSS 8.1 (high) · published 2026-10-12

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.

Weakness: CWE-288

Source: NVD CVE-2026-84360

References

• https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2
• https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1
• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp
• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp

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