CVE-2026-84360
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductGithub.com/0xjacky/nginx-ui
PublishedOct 12, 2026
First seenOct 12, 2026
Weakness typeCWE-288CWE-288
How to fix
Update
- github.com/0xJacky/Nginx-UI1.9.10-0.20260703131214-23d1934099b0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/0xJacky/Nginx-UIGo | v < 1.9.10-0.20260703131214-23d1934099b0 | 1.9.10-0.20260703131214-23d1934099b0 |
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