CVE-2026-14537 — CRITICAL (9.8)

Vulnerability Description

Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequired feature via sending tool invocation requests through legacy HTTP endpoints when the --enable-api flag is active.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Google	Mcp Toolbox For Databases	1.3.0

Related Weaknesses (CWE)

CWE-863

References

https://github.com/googleapis/mcp-toolbox/pull/3435Issue TrackingPatch

FAQ

What is CVE-2026-14537?

CVE-2026-14537 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Incorrect Authorization in the direct HTTP API tool invocation endpoint in Google mcp-toolbox versions v1.3.0 and v1.4.0 allows an unauthenticated attacker to invoke tools protected by the scopeRequir...

How severe is CVE-2026-14537?

CVE-2026-14537 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-14537?

Check the references section above for vendor advisories and patch information. Affected products include: Google Mcp Toolbox For Databases.