CVE-2026-14537CWE-863broken-access-control

CVE-2026-14537

Critical · published July 31, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
15.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00252 · 15.7th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-07-31T06:16Z
Affected products (2)
ProductVersionsFixed in
google/mcp_toolbox_for_databasesall versions—
google/mcp_toolbox_for_databasesall versions—
References (1)
https://github.com/googleapis/mcp-toolbox/pull/3435 · [email protected]
EPSS history
Timeline
  • 31 JUL 01:38Z
    Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints
    cvelistv5