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CVE-2026-25536

—
CVSS 3.1
7.1 high
EPSS
<1%p20
Published
()
Modified
Description

MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0.

Vendors
lfprojects
Products
mcp typescript sdk
Weakness
CWE-362, CWE-367
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

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