CVE-2026-84360

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 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

13 Oct 2026, 14:17

Type	Values Removed	Values Added
References	~~() https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp -~~	() https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp -

12 Oct 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 21:17

Updated : 2026-10-13 14:31

NVD link : CVE-2026-84360

Mitre link : CVE-2026-84360

CVE.ORG link : CVE-2026-84360

JSON object : View

Products Affected

No product.

CWE

CWE-288

Authentication Bypass Using an Alternate Path or Channel

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