GHSA-46GC-MWH4-CC5R

Vulnerability from github – Published: 2025-12-03 16:07 – Updated: 2025-12-03 18:56
VLAI?
Summary
Docker MCP Plugin and Docker MCP Gateway have DNS Rebinding vulnerability when running in sse or streaming mode
Details

Impact

When ran in sse or streaming mode (--transport), the Docker MCP Gateway is vulnerable to a DNS rebinding attack.

Vulnerability allows for Browser-Based exploitation of any MCP servers that are executing within the Docker MCP Gateway. Any tools or other features exposed by MCP servers can be manipulated by an attacker who is able to get a victim to visit a malicious website, or if a victim is served a malicious advertisement.

The MCP Gateway is not prone to this attack when started in its default stdio mode, which does not listen on any network ports.

Patches

Patch available in version v0.28.0

Workarounds

Do not start the MCP gateway in sse or streaming mode (use default stdio)

Severity ?
7.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.27.0"
      },
      "package": {
        "ecosystem": "Go",
        "name": "github.com/docker/mcp-gateway"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.28.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-64443"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-749"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-03T16:07:31Z",
    "nvd_published_at": "2025-12-03T18:15:46Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nWhen ran in sse or streaming mode (--transport), the Docker MCP Gateway is vulnerable to a DNS rebinding attack. \n\nVulnerability allows for Browser-Based exploitation of any MCP servers that are executing within the Docker MCP Gateway. Any tools or other features exposed by MCP servers can be manipulated by an attacker who is able to get a victim to visit a malicious website, or if a victim is served a malicious advertisement. \n\nThe MCP Gateway is not prone to this attack when started in its default stdio mode, which does not listen on any network ports.\n\n\n### Patches\nPatch available in version v0.28.0\n\n### Workarounds\nDo not start the MCP gateway in sse or streaming mode (use default stdio)",
  "id": "GHSA-46gc-mwh4-cc5r",
  "modified": "2025-12-03T18:56:54Z",
  "published": "2025-12-03T16:07:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/docker/mcp-gateway/security/advisories/GHSA-46gc-mwh4-cc5r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-64443"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/mcp-gateway/pull/190"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/mcp-gateway/commit/6b076b2479d8d1345c50c112119c62978d46858e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/docker/mcp-gateway/commit/fe073985c8eb6e0c9317d2f198c07686f70ea06d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/docker/mcp-gateway"
    },
    {
      "type": "WEB",
      "url": "https://modelcontextprotocol.io/specification/2025-06-18/basic/transports#security-warning"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:H/VA:N/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Docker MCP Plugin and Docker MCP Gateway have DNS Rebinding vulnerability when running in sse or streaming mode"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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