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CVE-2026-52870 MCP Python SDK: Experimental task handlers allow any client to access and cancel other clients' tasks

🗓️ 15 Jul 2026 20:07:53Reported by GitHub_MType 
vulnrichment
 vulnrichment
🔗 github.com👁 14 Views

CVE-2026-52870: MCP Python SDK experimental task handlers allow cross-client task access; fixed in 1.27.2.

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15 Jul 2026 20:07Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.6
EPSS0.00388
SSVC
14