207 matches found
CVE-2026-81092 mcp-go before 0.56.0 Missing Host Header Validation Enables DNS Rebinding
mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamablehttp.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the host it named, and the SSE transport's...
GO-2026-6295 genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport in github.com/geiserx/genieacs-mcp
genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport in github.com/geiserx/genieacs-mcp...
GHSA-HVFH-5MJ3-5F3J Chainlist has SSRF via MCP SSE and streamable-http transports that allows unauthenticated internal network access
Am I affected? Only if your deployment sets features.mcp.enabled = true in .chainlit/config.toml. MCP has been disabled by default since v2.7.0, so most Chainlit deployments are not affected. No authentication is required: /mcp is reachable by any client that can open a session. Summary When MCP ...
EUVD-2026-65738
Chainlit is a Python framework for building production-ready conversational AI applications. From 2.4.0rc0 until 2.12.0, Chainlit deployments with features.mcp.enabled set to true in .chainlit/config.toml expose the POST /mcp endpoint without requiring authentication. For sse and streamable-http...
genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport
genieacs-mcp exposes a local Streamable HTTP MCP endpoint that accepts attacker-controlled Host and Origin headers. A malicious web page can use DNS rebinding to route browser requests to a victim's loopback MCP listener while preserving the attacker origin. The server accepts the request,...
EUVD-2026-65692
genieacs-mcp is an MCP server for GenieACS written in Go. Prior to 0.3.2, the Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp listener on the default MCPLISTENADDR value 127.0.0.1:8080 when MCPAUTHTOKEN is unset and the httpSrv.Startaddr branch does not validate th...
CVE-2026-55637
genieacs-mcp is an MCP server for GenieACS written in Go. Prior to 0.3.2 , the Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp listener on the default address 127.0.0.1:8080 when MCP_AUTH_TOKEN is unset, without validating Host or Origin headers. A malicious websit...
CVE-2026-45019: Server-Side Request Forgery (SSRF)
Chainlit is a Python framework for building production-ready conversational AI applications. From 2.4.0rc0 until 2.12.0, Chainlit deployments with features.mcp.enabled set to true in .chainlit/config.toml expose the POST /mcp endpoint without requiring authentication. For sse and streamable-http...
CVE-2026-59279
The MCP Streamable HTTP server transport WebFlux and WebMvc variants does not place any limit on the number of sessions it retains, and by default does not require clients to be authenticated. As a result, a remote attacker can cause the server to accumulate an unbounded number of sessions over...
CVE-2026-59279 Unbounded persistent session allocation via repeated initialize requests
The MCP Streamable HTTP server transport WebFlux and WebMvc variants does not place any limit on the number of sessions it retains, and by default does not require clients to be authenticated. As a result, a remote attacker can cause the server to accumulate an unbounded number of sessions over...
CVE-2026-59279
Spring AI 2.0.0 is affected by a Denial of Service vulnerability in the MCP Streamable HTTP server transport (both WebFlux and WebMvc variants). The transport does not impose any limit on the number of sessions it retains and, by default, does not require client authentication. A remote unauthent...
PT-2026-79375
Name of the Vulnerable Software and Affected Versions Spring AI version 2.0.0 Description The MCP Streamable HTTP server transport, specifically the WebFlux and WebMvc variants, fails to limit the number of retained sessions and does not require client authentication by default. This allows a...
CVE-2026-59279: Allocation of Resources Without Limits or Throttling
The MCP Streamable HTTP server transport WebFlux and WebMvc variants does not place any limit on the number of sessions it retains, and by default does not require clients to be authenticated. As a result, a remote attacker can cause the server to accumulate an unbounded number of sessions over...
BIT-CONSUL-2026-16498 terraform-mcp-server vulnerable to cross-tenant credential reuse in streamable-HTTP stateless mode
The terraform-mcp-server before version 1.1.0 is vulnerable to a cross-tenant credential reuse issue in the streamable-HTTP stateless transport mode that may allow one user's Terraform token to be used to execute tool calls on behalf of subsequent users. This vulnerability, CVE-2026-16498, is fix...
BIT-CONSUL-2026-14869 terraform-mcp-server vulnerable to server side request forgery leading to token exposure
The terraform-mcp-server before version 1.1.0 is vulnerable to a server-side request forgery issue in the streamable-HTTP transport that may allow an unauthenticated remote client to redirect the server's Terraform API requests, and the server-side authorization token, to an attacker-controlled...
PT-2026-71152
Name of the Vulnerable Software and Affected Versions Microsoft UFO versions prior to 3.0.8 Description The create mobile data collection server and create mobile action server functions in ufo/client/mcp/http servers/mobile mcp server.py expose Streamable HTTP MCP services on TCP ports 8020 and...
MCP Ruby SDK: Ruby SSE Session Poisoning
Summary Vulnerability: Missing Session Ownership Validation in the Ruby MCP SDK's Streamable and SSE HTTP transport implementation. Any attacker with a stolen session ID can execute tools with the victim's session. This is a silent attack - the victim's session is compromised and being used for...
MCP Ruby SDK: Unbounded JSON-RPC request body causes uncontrolled memory allocation in StreamableHTTPTransport
Summary An unauthenticated remote attacker can force any MCP Ruby SDK server using MCP::Server::Transports::StreamableHTTPTransport to allocate gigabytes of memory by sending a single oversized JSON-RPC POST. The transport reads the entire HTTP body into a Ruby String and parses it with...
GHSA-H669-8M4G-R2HC MCP Ruby SDK: Unbounded JSON-RPC request body causes uncontrolled memory allocation in StreamableHTTPTransport
Summary An unauthenticated remote attacker can force any MCP Ruby SDK server using MCP::Server::Transports::StreamableHTTPTransport to allocate gigabytes of memory by sending a single oversized JSON-RPC POST. The transport reads the entire HTTP body into a Ruby String and parses it with...