CVE-2026-84318

{
  "etk_id": "ETK-2026-1415",
  "cve_id": "CVE-2026-84318",
  "display_id": "CVE-2026-84318",
  "ghsa_id": "GHSA-9jww-cxg5-rj9m",
  "euvd_id": "EUVD-2026-97908",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Configuration validation bypass in nginx-ui MCP tool",
  "summary": "nginx-ui versions from 2.0.0-rc.6 through versions before 2.4.1 do not validate configuration submitted through the MCP configuration-addition tool. An authenticated attacker can add prohibited Nginx directives and reload Nginx; this can lead to code execution when supported scripting modules are installed.",
  "mitigation": "Upgrade nginx-ui to version 2.4.1. Until upgraded, restrict access to authenticated nginx-ui and MCP users, and limit or disable the MCP configuration-addition capability where possible.",
  "vendor": "0xJacky",
  "product": "nginx-ui",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= v2.0.0-rc.6"
      ],
      "ecosystem": "go",
      "fixed_versions": [],
      "package_name": "github.com/0xJacky/nginx-ui",
      "purl": "pkg:golang/github.com/0xJacky/nginx-ui"
    }
  ],
  "cwes": [
    693
  ],
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0062,
  "epss_percentile": 0.4863,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 27.414780183333335,
  "t0_at": "2026-10-12T20:20:18.595000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-12T21:29:08.691163+00:00",
      "days": 0.04780203892361111,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:20:18.595000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-15T20:11:18+00:00",
      "days": 2.993743113425926,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:20:18.595000+00:00",
      "url": "https://github.com/advisories/GHSA-9jww-cxg5-rj9m"
    },
    "trigger_signal": {
      "at": "2026-10-12T20:20:18.595000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:20:18.595000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-84318"
    }
  }
}