CVE-2026-84319

HighCVSS 8.3/10Last modified Oct 13, 2026

Description

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.

Metrics

CVSS 3.1 8.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Weakness enumeration

CWE-693

Affected software

VendorProductVersions
0xJackynginx-ui< 2.4.1

References

Timeline

Published
Oct 12, 2026
Last modified
Oct 13, 2026
NVD status
Deferred

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CVE-2026-84319: High severity, CVSS 8.3 | Vulnix