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Mcp Typescript Sdk

3 CVEs product

Monthly

CVE-2026-25536 npm HIGH PATCH This Week

MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. [CVSS 7.1 HIGH]

Race Condition Information Disclosure Mcp Typescript Sdk
NVD GitHub VulDB
CVSS 3.1
7.1
EPSS
0.0%
CVE-2026-0621 npm HIGH POC PATCH GHSA This Week

Denial of service in Anthropic's Model Context Protocol (MCP) TypeScript SDK versions up to and including 1.25.1 allows remote attackers to hang the Node.js event loop by submitting a crafted URI to the UriTemplate matcher. The dynamically built regex for RFC 6570 exploded array patterns contains nested quantifiers that trigger catastrophic backtracking, pinning CPU and rendering the process unresponsive. Publicly available exploit code exists, though EPSS is very low (0.02%) and it is not listed in CISA KEV, so real-world exploitation currently appears theoretical rather than widespread.

Node.js Denial Of Service Mcp Typescript Sdk
NVD GitHub
CVSS 4.0
8.7
EPSS
0.0%
CVE-2025-66414 npm HIGH PATCH This Week

A security vulnerability in MCP TypeScript SDK (CVSS 8.1) that allows dns rebinding protection. High severity vulnerability requiring prompt remediation. Vendor patch is available.

Authentication Bypass Mcp Typescript Sdk
NVD GitHub
CVSS 3.1
8.1
EPSS
0.0%
EPSS 0% CVSS 7.1
HIGH PATCH This Week

MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. [CVSS 7.1 HIGH]

Race Condition Information Disclosure Mcp Typescript Sdk
NVD GitHub VulDB
EPSS 0% CVSS 8.7
HIGH POC PATCH This Week

Denial of service in Anthropic's Model Context Protocol (MCP) TypeScript SDK versions up to and including 1.25.1 allows remote attackers to hang the Node.js event loop by submitting a crafted URI to the UriTemplate matcher. The dynamically built regex for RFC 6570 exploded array patterns contains nested quantifiers that trigger catastrophic backtracking, pinning CPU and rendering the process unresponsive. Publicly available exploit code exists, though EPSS is very low (0.02%) and it is not listed in CISA KEV, so real-world exploitation currently appears theoretical rather than widespread.

Node.js Denial Of Service Mcp Typescript Sdk
NVD GitHub
EPSS 0% CVSS 8.1
HIGH PATCH This Week

A security vulnerability in MCP TypeScript SDK (CVSS 8.1) that allows dns rebinding protection. High severity vulnerability requiring prompt remediation. Vendor patch is available.

Authentication Bypass Mcp Typescript Sdk
NVD GitHub

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