Chromium: CVE-2026-84354 Incorrect authorization in FileSystem

{
  "id": "1dd53007efd5eaa367792072a7e9f1350c81a53fd77088b56c0ada334cef68fb",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84354",
  "method": "llm",
  "payload": {
    "kind": "other",
    "title": "Chromium: CVE-2026-84354 Incorrect authorization in FileSystem",
    "summary": "Microsoft Edge (Chromium-based) ingests Chromium, which addresses the vulnerability; the announcement does not identify a fixed Edge version.",
    "evidence": "Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability.",
    "products": [
      {
        "name": {
          "value": "Microsoft Edge (Chromium-based)",
          "evidence": "Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability."
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-84354",
        "evidence": "Chromium: CVE-2026-84354 Incorrect authorization in FileSystem"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26753,
  "published_at": "2026-09-08T14:00:00+00:00"
}