TI-2026-10035 Aliases CVE-2026-11624 GHSA-76g7-m3xw-x9gr

Origin validation error in Google MCP Toolbox for Databases

MEDIUM 42CWE-346Published 2026-06-13 · Updated 2026-06-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-346.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00219 12th percentileScored 2026-11-07

Fix Fixed MCP Toolbox for Databases (Google): 0.25.0github.com/googleapis/mcp-toolbox (Go): 0.25.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	MCP Toolbox for Databases	before 0.25.0	0.25.0	Patch available	CNA
—	github.com/googleapis/mcp-toolbox (Go)	before 0.25.0	0.25.0	Patch available	GHSA-76g7-m3xw-x9gr

MCP Toolbox for Databases VendorGoogle Affected before 0.25.0 Fixed in 0.25.0 Patch available CNA
github.com/googleapis/mcp-toolbox (Go) Vendor— Affected before 0.25.0 Fixed in 0.25.0 Patch available GHSA-76g7-m3xw-x9gr

Remediation

Fix · CNA MCP Toolbox for Databases (Google) Fixed in 0.25.0
Fix · GHSA-76g7-m3xw-x9gr github.com/googleapis/mcp-toolbox (Go) Fixed in 0.25.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-11624
2026-10-03 Alias added: GHSA-76g7-m3xw-x9gr

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-11624

Other 4

TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6

See all 17247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences