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EUVD-2026-117725

🗓️ 05 Nov 2026 18:45:36Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 2 Views

Improper validation in mcp-go OAuthHandler.fetchServerMetadata allows token theft.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-123272
5 Nov 202618:45
–cve
cvelist
Cvelist
CVE-2026-123272 mcp-go before v1.2.1 Origin Validation Error via Unvalidated Well-Known Protected Resource Metadata
5 Nov 202618:45
–cvelist
nvd
NVD
CVE-2026-123272
5 Nov 202619:17
–nvd
[
  {
    "enisaIdVendor": [
      {
        "id": "6632e5f2-9337-3701-be44-972e1b957637",
        "vendor": {
          "name": "mark3labs"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "e656b7de-ba68-3d12-a8b0-ede7effc2c73",
        "product": {
          "name": "mcp-go",
          "vendor": {
            "name": "mark3labs"
          }
        },
        "product_version": "v0.48.0 <v1.2.1"
      }
    ]
  }
]

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05 Nov 2026 21:01Current
6Medium risk
Vulners AI Score6
CVSS 45
CVSS 3.18
2