CVE-2026-25536

HIGH

7.1

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.

Details CVE

Score CVSS v3.17.1

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie2/4/2026

Derniere modification3/18/2026

Sourcenvd

Observations honeypot0

Produits affectes

lfprojects:mcp_typescript_sdk

Faiblesses (CWE)

CWE-362

References

https://github.com/modelcontextprotocol/typescript-sdk/issues/204(security-advisories@github.com)

https://github.com/modelcontextprotocol/typescript-sdk/issues/243(security-advisories@github.com)

https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-345p-7cg4-v4c7(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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