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2 vulnerabilities found for MCP Toolbox for Databases by Google
CVE-2026-11624 (GCVE-0-2026-11624)
Vulnerability from cvelistv5 – Published: 2026-06-13 08:38 – Updated: 2026-06-15 17:21
VLAI?
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.
Severity ?
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| MCP Toolbox for Databases |
Affected:
0 , < 0.25.0
(semver)
|
Credits
Jonathan Leitschuh (https://github.com/JLLeitschuh)
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CVE-2026-9739 (GCVE-0-2026-9739)
Vulnerability from cvelistv5 – Published: 2026-05-27 21:38 – Updated: 2026-05-28 13:20
VLAI?
Summary
Vulnerable to DNS rebinding attacks when using SSE (http://b/499408790). During the beta phase, we implemented `allowed-origins` and `allowed-hosts` flags to align with MCP security guidelines. However, the hardcoded `Access-Control-Allow-Origin: *` header in the SSE initialization handler was inadvertently retained. This vulnerability specifically impacts users connecting via Toolbox using SSE under specification v2024-11-05.
Severity ?
CWE
- CWE-942 - Permissive Cross-domain Policy with Untrusted Domains
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| MCP Toolbox for Databases |
Affected:
0 , < PR 3054 (Fix CORS bypass)
(custom)
|
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