CVE-2025-64443

CRITICAL

docker/mcp-gateway < 0.28.0 - DNS Rebinding in SSE or Streaming Transport Mode

Title source: llm
STIX 2.1

Description

MCP Gateway allows easy and secure running and deployment of MCP servers. In versions 0.27.0 and earlier, when MCP Gateway runs in sse or streaming transport mode, it is vulnerable to DNS rebinding. An attacker who can get a victim to visit a malicious website or be served a malicious advertisement can perform browser-based exploitation of MCP servers executing behind the gateway, including manipulating tools or other features exposed by those MCP servers. MCP Gateway is not affected when running in the default stdio mode, which does not listen on network ports. Version 0.28.0 fixes this issue.

References (2)

Core 2

Scores

CVSS v3 9.6
EPSS 0.0037
EPSS Percentile 28.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-749
Status published
Products (2)
docker/mcp-gateway 0 - 0.28.0Go
docker/mcp_gateway < 0.28.0
Published Dec 03, 2025
Tracked Since Feb 18, 2026