PT-2026-66663 · Google · Mcp-Toolbox

David Carliez + 1 · CVE-2026-14537 · Published 2026-07-31 · Updated 2026-07-31

Mitre

CVSS v4.0

8.1

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

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.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2026-14537

Affected Products

Mcp-Toolbox

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-14537 · Security Note
• https://github.com/googleapis/mcp-toolbox/pull/3435 · Note