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EUVD-2026-44795

🗓️ 15 Jul 2026 20:06:23Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 3 Views

Prior to v1.27.2, MCP Python SDK allowed session hijacking via session_id without principal verification; fixed in v1.27.2.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-52869
15 Jul 202620:06
attackerkb
CVE
CVE-2026-52869
15 Jul 202620:06
cve
Cvelist
CVE-2026-52869 MCP Python SDK: HTTP transports serve session requests without verifying the authenticated principal
15 Jul 202620:06
cvelist
NVD
CVE-2026-52869
15 Jul 202620:17
nvd
Positive Technologies
PT-2026-53225
27 Jun 202600:00
ptsecurity
[
  {
    "enisaIdVendor": [
      {
        "id": "0728f788-1197-3376-bee5-75e1b33fd661",
        "vendor": {
          "name": "modelcontextprotocol"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "d268abd6-d11a-3493-b0b5-be58870ac01b",
        "product": {
          "name": "python-sdk",
          "vendor": {
            "name": "modelcontextprotocol"
          }
        },
        "product_version": "< 1.27.2"
      }
    ]
  }
]

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15 Jul 2026 20:06Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.1
EPSS0.00054
3