CVE-2026-34742

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.0, the Model Context Protocol MCP Go SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPHandler or...

CVE-2026-34742 Model Context Protocol Go SDK: DNS Rebinding Protection Disabled by Default for Servers Running on Localhost

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.0, the Model Context Protocol MCP Go SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPHandler or...

CVE-2026-34742 Model Context Protocol Go SDK: DNS Rebinding Protection Disabled by Default for Servers Running on Localhost

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.0, the Model Context Protocol MCP Go SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPHandler or...

CVE-2026-34742: Initialization of a Resource with an Insecure Default

The Go MCP SDK used Go's standard encoding/json. Prior to version 1.4.0, the Model Context Protocol MCP Go SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPHandler or...

MCP Go SDK 安全漏洞

MCP Go SDK is an open-source development toolkit for the Model Context Protocol. Versions of MCP Go SDK prior to 1.4.0 contained security vulnerabilities. These vulnerabilities stemmed from the default lack of DNS rebinding protection, allowing malicious websites to bypass the same-origin policy...

fast-filesystem-mcp 命令注入漏洞

fast-filesystem-mcp is a model context protocol server developed by Efforthye. Versions of fast-filesystem-mcp 3.5.1 and earlier contained a command injection vulnerability. This vulnerability originated from the handleGetDiskUsage function in the file src/index.ts, which allowed command injectio...

GHSA-W2FM-25VW-VH7F mcp-handler has a tool response leak across concurrent client sessions ('Race Condition')

mcp-handler versions prior to 1.1.0 accepted @modelcontextprotocol/sdk =1.26.0, which contains the fix for CVE-2026-25536. Workarounds - Upgrade @modelcontextprotocol/sdk to =1.26.0 note: the SDK will throw on transport reuse, which will break mcp-handler 1.1.0 which effectively forces the upgrad...

mcp-handler has a tool response leak across concurrent client sessions ('Race Condition')

mcp-handler versions prior to 1.1.0 accepted @modelcontextprotocol/sdk =1.26.0, which contains the fix for CVE-2026-25536. Workarounds - Upgrade @modelcontextprotocol/sdk to =1.26.0 note: the SDK will throw on transport reuse, which will break mcp-handler 1.1.0 which effectively forces the upgrad...

DNS Rebinding Protection Disabled by Default in Model Context Protocol Go SDK for Servers Running on Localhost

The Model Context Protocol MCP Go SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPHandler or SSEHandler, a malicious website could exploit DNS rebinding to bypass same-origi...

GHSA-XW59-HVM2-8PJ6 DNS Rebinding Protection Disabled by Default in Model Context Protocol Go SDK for Servers Running on Localhost

The Model Context Protocol MCP Go SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPHandler or SSEHandler, a malicious website could exploit DNS rebinding to bypass same-origi...

PT-2026-29672

Name of the Vulnerable Software and Affected Versions Go MCP SDK versions prior to 1.4.0 Description The Go MCP SDK, utilizing Go's standard encoding/json, did not enable DNS rebinding protection by default for HTTP-based servers prior to version 1.4.0. When an HTTP-based MCP server was run on...

CVE-2026-33032

Nginx UI is a web user interface for the Nginx web server. In versions 2.3.5 and prior, the nginx-ui MCP Model Context Protocol integration exposes two HTTP endpoints: /mcp and /mcpmessage. While /mcp requires both IP whitelisting and authentication AuthRequired middleware, the /mcpmessage endpoi...

CVE-2026-34237

MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 0.83.0, 1.0.1, and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 0.83.0, 1.0.1, and 1.1.1...

CVE-2026-34237

CVE-2026-34237 affects MCP Java SDK. A hardcoded wildcard CORS configuration (Access-Control-Allow-Origin: *) existed in versions before 0.83.0, 1.0.1, and 1.1.1, allowing cross-origin requests to server endpoints (including SSE paths). The issue has been patched in those versions (0.83.0, 1.0.1,...

CVE-2026-34237 MCP Java SDK has a Hardcoded Wildcard CORS (Access-Control-Allow-Origin: *)

MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 0.83.0, 1.0.1, and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 0.83.0, 1.0.1, and 1.1.1...

CVE-2026-34237 MCP Java SDK has a Hardcoded Wildcard CORS (Access-Control-Allow-Origin: *)

MCP Java SDK is the official Java SDK for Model Context Protocol servers and clients. Prior to versions 0.83.0, 1.0.1, and 1.1.1, there is a hardcoded wildcard CORS vulnerability. This issue has been patched in versions 0.83.0, 1.0.1, and 1.1.1...

CVE-2026-34163 Server-Side Request Forgery via MCP Tools Endpoint in FastGPT

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's MCP Model Context Protocol tools endpoints /api/core/app/mcpTools/getTools and /api/core/app/mcpTools/runTool accept a user-supplied URL parameter and make server-side HTTP requests to it without validating whether the...

EUVD-2026-17447

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's MCP Model Context Protocol tools endpoints /api/core/app/mcpTools/getTools and /api/core/app/mcpTools/runTool accept a user-supplied URL parameter and make server-side HTTP requests to it without validating whether the...

CVE-2026-34163 Server-Side Request Forgery via MCP Tools Endpoint in FastGPT

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's MCP Model Context Protocol tools endpoints /api/core/app/mcpTools/getTools and /api/core/app/mcpTools/runTool accept a user-supplied URL parameter and make server-side HTTP requests to it without validating whether the...

CVE-2026-34163

FastGPT is an AI Agent building platform. Prior to version 4.14.9.5, FastGPT's MCP Model Context Protocol tools endpoints /api/core/app/mcpTools/getTools and /api/core/app/mcpTools/runTool accept a user-supplied URL parameter and make server-side HTTP requests to it without validating whether the...