CVE-2026-81356 Visual Studio Code Security Feature Bypass Vulnerability

{
  "id": "a2686144196fb6d2bbe600f1d664a52b4492e9f8c63fe6759498f9428123e28f",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81356",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-81356 Visual Studio Code Security Feature Bypass Vulnerability",
    "summary": "Visual Studio Code has an HTTP request/response smuggling issue that may let an unauthorized attacker bypass a security feature over a network.",
    "evidence": "Inconsistent interpretation of http requests ('http request/response smuggling') in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.",
    "products": [
      {
        "name": {
          "value": "Visual Studio Code",
          "evidence": "CVE-2026-81356 Visual Studio Code Security Feature Bypass Vulnerability"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-81356",
        "evidence": "CVE-2026-81356 Visual Studio Code Security Feature Bypass Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26716,
  "published_at": "2026-09-08T14:00:00+00:00"
}