ETK-2026-2528Zero's internal tracking ID, independent of the CVE number.

{
  "etk_id": "ETK-2026-2528",
  "cve_id": null,
  "display_id": "ETK-2026-2528",
  "ghsa_id": "GHSA-fvv4-gmv9-xqf5",
  "euvd_id": null,
  "status": "published",
  "anchor_state": "awaiting_cve",
  "title": "Prototype pollution in n8n workflow-history handling",
  "summary": "n8n workflow-history processing can allow workflow connection data to modify object behavior across the running process. A low-privileged user who can save a workflow may cause login and write operations to return server errors when history compaction processes the workflow.",
  "mitigation": "Upgrade n8n to >= 2.41.4 or later.",
  "vendor": "npm",
  "product": "n8n",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "< 2.41.4"
      ],
      "ecosystem": "npm",
      "fixed_versions": [
        ">= 2.41.4"
      ],
      "package_name": "n8n",
      "purl": "pkg:npm/n8n"
    }
  ],
  "cwes": null,
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 28.601705716666668,
  "t0_at": null,
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T09:34:48+00:00",
      "days": -8.63187942400463,
      "is_lower_bound": true,
      "measured_at": "2026-10-23T00:44:42.464095+00:00",
      "url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-fvv4-gmv9-xqf5"
    }
  }
}