CVE-2026-55637

creationtimestamp| type| source ---|---|--- 2026-08-25 20:35:33+00:00| published-proof-of-concept| https://github.com/GeiserX/genieacs-mcp/security/advisories/GHSA-cmwv-wf9p-p8wx 2026-08-26 12:32:44+00:00| seen| https://gist.github.com/alon710/f1f1abcaa50d05cc95fe39660771a422...

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 MCPLISTENADDR value 127.0.0.1:8080 when MCPAUTHTOKEN is unset and the httpSrv.Startaddr branch does not validate th...

GHSA-CMWV-WF9P-P8WX 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,...

CVE-2026-55637 genieacs-mcp: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport

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: DNS rebinding reaches local GenieACS MCP Streamable HTTP transport

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...

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...

PT-2026-81459

Name of the Vulnerable Software and Affected Versions genieacs-mcp versions prior to 0.3.2 Description The Streamable HTTP transport in cmd/server/main.go creates an unauthenticated /mcp endpoint on the default address 127.0.0.1:8080 when the MCP AUTH TOKEN variable is unset. The server fails to...