CVE-2026-108699

{
  "etk_id": "ETK-2026-1251",
  "cve_id": "CVE-2026-108699",
  "display_id": "CVE-2026-108699",
  "ghsa_id": "GHSA-4j25-h357-wg62",
  "euvd_id": "EUVD-2026-96999",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Improper plugin signature verification in hyper-mcp",
  "summary": "hyper-mcp through 0.8.3 may accept WebAssembly plugin images signed by untrusted identities because its default signature checks do not constrain the signer or issuer. An attacker able to control a plugin image reference could load a malicious plugin with the host, filesystem, and environment access granted to plugins.",
  "mitigation": "Configure plugin signature verification to allow only approved signer identities and OIDC issuers, and restrict who can change plugin image references. Do not permit untrusted plugin images until a fixed release is available.",
  "vendor": "hyper-mcp-rs",
  "product": "hyper-mcp",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 0.8.3"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "hyper-mcp",
      "purl": null
    }
  ],
  "cwes": [
    347
  ],
  "cvss_score": 8.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N",
  "epss_score": 0.0013,
  "epss_percentile": 0.0261,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 87.50023625,
  "t0_at": "2026-10-11T13:25:59.469000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-11T13:25:59.469000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-11T13:25:59.469000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-108699"
    }
  }
}