CVE-2026-11624

Published: Jun 13, 2026Updated: Jul 23, 2026 Sources: CVE List NVDCWE-346

N/ACVSS

NVD MITRE

EPSS Score

Description

The Model Context Protocol has a security warning advising servers to validate the "Origin" header on all incoming connections to prevent DNS rebinding attacks. Prior to the v0.25.0 release, users had no way to validate the origin's host. In v0.25.0, a new "--allowed-hosts" flag was introduced alongside the existing "--allowed-origins" flag, enabling users to specify permitted hosts at server startup. Both flags default to "*", allowing users to implement strict access controls as needed without breaking existing setups. If either flag is set to "*", the server will output a startup warning about potential vulnerabilities. Documentation has also been updated to highlight these security considerations.

No summary for this CVE yet.

Weaknesses

CWE-346

Affected Products

Google

commercial·USaka google inc, google llc

MCP Toolbox for DatabasesOn-premDatabase

Databases / db-tooling

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/googleapis/mcp-toolbox/issues/3113

github.com

https://github.com/googleapis/mcp-toolbox/pull/2254

github.com

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