← CVE Intelligence

CVE-2026-84319

Nginx UI: MCP configuration tools bypass restricted directive validation and allow secondary authenticated users to execute NJS in Nginx worker context PUBLISHED

Description (CNA)

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the regular HTTP configuration API rejects restricted Nginx directives such as load_module, js_import, and js_content. However, the MCP configuration interface allows a secondary authenticated user to write and apply equivalent restricted configuration content. This allows the user to load ngx_http_js_module.so, import attacker-controlled JavaScript, reload Nginx, and execute NJS in the Nginx worker context. This issue is fixed in version 2.4.1.

Affected (CNA)

Vendor / productVersions
0xJacky / nginx-uiaffected < 2.4.1

CWE

CWE-693

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.