PT-2026-40789 · Undefined · Undefined
Published
2026-05-13
·
Updated
2026-05-13
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CVE-2026-31200
None
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Two CVEs (CVE-2026-30889 and CVE-2026-31200) were classic JSON-RPC parser bugs in popular MCP client SDKs. One allowed a server response to set arbitrary properties on the client's session-state object via prototype pollution. The other allowed a server to inject batched…
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Affected Products
Undefined