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CVE-2026-25536

🔴 HIGH

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 tran...

Published
Feb 04, 2026
Last Modified
Feb 05, 2026
Views
10
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0

Description

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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.

CVSS Scores

CVSS 3.1 7.1
7.1
HIGH
CVSS 2.0 7.1

References

github.com github.com github.com

Additional Information

Source
security-advisories@github.com
State
Awaiting analysis

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