CVE-2026-88204 Microsoft Office SharePoint Spoofing Vulnerability

{
  "id": "2d6dac276e128b8e312baf0c86356c096ef104e1e441a6581421b0121388365c",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88204",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-88204 Microsoft Office SharePoint Spoofing Vulnerability",
    "summary": "An authorized attacker can exploit cross-site scripting in Microsoft Office SharePoint to perform spoofing over a network.",
    "evidence": "Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.",
    "products": [
      {
        "name": {
          "value": "Microsoft Office SharePoint",
          "evidence": "Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network."
        },
        "prerequisites": [
          {
            "value": "authorized attacker",
            "evidence": "allows an authorized attacker to perform spoofing over a network"
          }
        ],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-88204",
        "evidence": "CVE-2026-88204 Microsoft Office SharePoint Spoofing Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25325,
  "published_at": "2026-10-13T14:00:00+00:00"
}