CVE-2026-106446

{
  "etk_id": "ETK-2026-803",
  "cve_id": "CVE-2026-106446",
  "display_id": "CVE-2026-106446",
  "ghsa_id": "GHSA-8r5x-fm3f-whwj",
  "euvd_id": "EUVD-2026-93969",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Code injection through untrusted ASTs in Handlebars",
  "summary": "Handlebars before 4.7.10 can generate attacker-controlled JavaScript when an application passes an untrusted object to compile() or precompile() instead of a template string. This can execute code in the server process during rendering or in environments that load generated precompiled templates. Applications that pass only template strings are not affected.",
  "mitigation": "Upgrade the npm handlebars package to version 4.7.10 or later. Ensure inputs to compile() and precompile() are strings, and use the runtime-only build on servers that compile templates only during builds.",
  "vendor": "handlebars-lang",
  "product": "handlebars.js",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0.0, <= 4.7.9"
      ],
      "ecosystem": "npm",
      "fixed_versions": [],
      "package_name": "handlebars",
      "purl": "pkg:npm/handlebars"
    }
  ],
  "cwes": [
    94
  ],
  "cvss_score": 9.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0064,
  "epss_percentile": 0.4977,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "mechanism_verified",
  "exploit": false,
  "pipeline_minutes": 13.718564116666666,
  "t0_at": "2026-10-06T19:41:55.785000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-07T04:30:19.791456+00:00",
      "days": 0.36694451916666665,
      "is_lower_bound": false,
      "measured_at": "2026-10-06T19:41:55.785000+00:00",
      "url": null
    },
    "public_poc": {
      "at": "2026-10-08T17:52:32+00:00",
      "days": 1.9240302662037037,
      "is_lower_bound": false,
      "measured_at": "2026-10-06T19:41:55.785000+00:00",
      "url": "https://github.com/advisories/GHSA-8r5x-fm3f-whwj"
    },
    "trigger_signal": {
      "at": "2026-10-05T22:40:54+00:00",
      "days": -0.8757151041666666,
      "is_lower_bound": false,
      "measured_at": "2026-10-06T19:41:55.785000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-106446"
    }
  }
}