EUVD-2026-36544

AgenticMail gives AI agents real email addresses and phone numbers. Prior to version 0.9.27, @agenticmail/mcp exposes a Streamable HTTP transport when started with --http or MCPHTTP=1. In that mode, the /mcp endpoint accepts requests without any HTTP authentication layer. A remote client can...

CVE-2026-42559

A flaw was found in rmcp, the official Rust SDK for the Model Context Protocol. The Streamable HTTP server transport in rmcp failed to validate the incoming Host header, enabling a malicious public website to exploit this through a DNS rebinding attack. This allows the attacker to send...

CVE-2026-42559

The RMCP Streamable HTTP server transport in the rmcp crate failed to validate the Host header prior to version 1.4.0, enabling a DNS rebinding attack that could cause authenticated requests to reach a victim’s local MCP server. Impact could include enumeration, reading state, and triggering side...

EUVD-2026-30292

RMCP is an official Rust SDK for the Model Context Protocol. Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport crates/rmcp/src/transport/streamablehttpserver/ did not validate the incoming Host header. This allowed a malicious public website, via a DNS rebinding attack, to...

rmcp Streamable HTTP server transport has a DNS rebinding vulnerability

Summary Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport crates/rmcp/src/transport/streamablehttpserver/ did not validate the incoming Host header. This allowed a malicious public website, via a DNS rebinding attack, to send authenticated requests to an MCP server running...

GHSA-89VP-X53W-74FX rmcp Streamable HTTP server transport has a DNS rebinding vulnerability

Summary Prior to version 1.4.0, the rmcp crate's Streamable HTTP server transport crates/rmcp/src/transport/streamablehttpserver/ did not validate the incoming Host header. This allowed a malicious public website, via a DNS rebinding attack, to send authenticated requests to an MCP server running...

CVE-2026-40576

excel-mcp-server is a Model Context Protocol server for Excel file manipulation. A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated...

GHSA-J98M-W3XP-9F56 excel-mcp-server has a Path Traversal issue

Summary A path traversal vulnerability exists in excel-mcp-server versions up to and including 0.1.7. When running in SSE or Streamable-HTTP transport mode the documented way to use this server remotely, an unauthenticated attacker on the network can read, write, and overwrite arbitrary files on...

PT-2026-33225

Name of the Vulnerable Software and Affected Versions excel-mcp-server versions prior to 0.1.8 Description A path traversal issue exists when the server runs in SSE or Streamable-HTTP transport mode. An unauthenticated network attacker can read, write, and overwrite arbitrary files on the host...

CVE-2026-35577

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

CVE-2026-35577

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

CVE-2026-35577

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

CVE-2026-35577

CVE-2026-35577 affects Apollo MCP Server (GraphQL/MCP) prior to v1.7.0 where Host header validation was missing for HTTP StreamableHTTP transport. This could allow a local user running the MCP server on localhost to be influenced by a malicious site via DNS rebinding, bypassing same-origin policy...

CVE-2026-35577 Missing Host Header Validation in Apollo MCP Server for Localhost Deployments

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

PT-2026-31715

Apollo MCP Server is a Model Context Protocol server that exposes GraphQL operations as MCP tools. Prior to version 1.7.0, the Apollo MCP Server did not validate the Host header on incoming HTTP requests when using StreamableHTTP transport. In configurations where an HTTP-based MCP server is run ...

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...

Session Fixation

Overview mcp is a The official Ruby SDK for Model Context Protocol servers and clients Affected versions of this package are vulnerable to Session Fixation through the storestreamforsession process in lib/mcp/server/transports/streamablehttptransport.rb. An attacker can intercept all subsequent...

MCP Ruby SDK 安全漏洞

MCP Ruby SDK is an open-source development toolkit for building and interacting with Model Context Protocol clients. Versions of the MCP Ruby SDK prior to 0.9.2 contained security vulnerabilities. These vulnerabilities stemmed from issues with the streamablehttptransport.rb implementation, which...

CVE-2026-33252

A flaw was found in the Go MCP SDK's Streamable HTTP transport, which uses Go's standard encoding/json package. In deployments without authorization, a remote attacker can exploit this Cross-Site Request Forgery CSRF vulnerability. By sending browser-generated cross-site POST requests to a local...

MCP Go SDK 跨站请求伪造漏洞

MCP Go SDK is an open-source development toolkit for the Model Context Protocol. Versions of MCP Go SDK prior to 1.4.1 contained a cross-site request forgeing vulnerability. This vulnerability stemmed from Streamable HTTP transmissions that did not validate the Origin header and did not specify t...