ETK-2026-3617Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-3617",
  "cve_id": null,
  "display_id": "ETK-2026-3617",
  "ghsa_id": "GHSA-3fwm-h59w-j268",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Prototype pollution in HedgeDoc note-history updates",
  "summary": "HedgeDoc through 1.12.0 has prototype pollution in authenticated note-history update handling. An authenticated user can cause server errors and crash the Node.js process. Deployments that use signed-in accounts and permit history changes are affected.",
  "mitigation": "Upgrade HedgeDoc to version 1.12.1 or later. If an immediate upgrade is not possible, use a reverse proxy to restrict the authenticated note-history modification endpoint, understanding that this disables history changes for signed-in users.",
  "vendor": null,
  "product": "hedgedoc",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 1.12.0"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "1.12.1"
      ],
      "package_name": "hedgedoc",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 13.642998683333333,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-11-04T21:38:20+00:00",
      "days": -0.8199040212268518,
      "is_lower_bound": true,
      "measured_at": "2026-11-05T17:18:59.865113+00:00",
      "url": "https://github.com/hedgedoc/hedgedoc/security/advisories/GHSA-3fwm-h59w-j268"
    }
  }
}