CVE-2026-84317

{
  "etk_id": "ETK-2026-1718",
  "cve_id": "CVE-2026-84317",
  "display_id": "CVE-2026-84317",
  "ghsa_id": "GHSA-76pm-mq2q-9gcr",
  "euvd_id": "EUVD-2026-97895",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Nginx-UI MCP configuration directive validation bypass",
  "summary": "Nginx-UI’s MCP configuration-add operation does not enforce the directive restrictions applied to other configuration write paths. An authenticated MCP user, or an agent acting with such access, can add restricted Nginx directives; deployments with njs or Perl modules enabled may allow code to run in Nginx workers.",
  "mitigation": "Update github.com/0xJacky/Nginx-UI to version 1.9.10-0.20260703131214-23d1934099b0 or later. Until updated, restrict MCP access to trusted principals and disable it where it is not required.",
  "vendor": "go",
  "product": "go:github.com/0xJacky/Nginx-UI",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 1.9.10-0.20260703131214-23d1934099b0"
      ],
      "ecosystem": "go",
      "fixed_versions": [
        "1.9.10-0.20260703131214-23d1934099b0"
      ],
      "package_name": "github.com/0xJacky/Nginx-UI",
      "purl": "pkg:golang/github.com/0xJacky/Nginx-UI"
    }
  ],
  "cwes": null,
  "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": 0.0038,
  "epss_percentile": 0.301,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": true,
  "check_confidence_basis": "differential",
  "exploit": false,
  "pipeline_minutes": 41.90277955,
  "t0_at": "2026-10-12T20:59:58.019000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-15T21:06:48.865240+00:00",
      "days": 3.004755164814815,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:59:58.019000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-15T20:11:07+00:00",
      "days": 2.9660761689814814,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:59:58.019000+00:00",
      "url": "https://github.com/advisories/GHSA-76pm-mq2q-9gcr"
    },
    "trigger_signal": {
      "at": "2026-10-12T20:59:58.019000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-12T20:59:58.019000+00:00",
      "url": "https://github.com/advisories/GHSA-76pm-mq2q-9gcr"
    }
  }
}