CVE-2026-84318 Nginx UI - Remote Code Execution

Nginx UI 2.0.0-rc.6 to 2.4.1 contains a remote code execution caused by missing config validation in MCP tool nginx_config_add, letting authenticated attackers execute code by writing dangerous config directives.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.62% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-693

Vendor fix

Update to version 2.4.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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