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CVE Vulnerability Details :
CVE-2026-14537
PUBLISHED
More InfoOfficial Page
Assigner-Google
Assigner Org ID-14ed7db2-1595-443d-9d34-6215bf890778
View Known Exploited Vulnerability (KEV) details
Published At-31 Jul, 2026 | 01:38
Updated At-31 Jul, 2026 | 16:08
Rejected At-
▼CVE Numbering Authority (CNA)
Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints

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.

Affected Products
Vendor
Google LLCGoogle
Product
mcp-toolbox
Default Status
unaffected
Versions
Affected
  • 1.3.0
  • v1.4.0
Problem Types
TypeCWE IDDescription
CWECWE-863CWE-863 (Incorrect Authorization)
Type: CWE
CWE ID: CWE-863
Description: CWE-863 (Incorrect Authorization)
Metrics
VersionBase scoreBase severityVector
4.08.1HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Version: 4.0
Base score: 8.1
Base severity: HIGH
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
Metrics Other Info
Impacts
CAPEC IDDescription
CAPEC-180CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels
CAPEC ID: CAPEC-180
Description: CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels
Solutions
Configurations
Workarounds
Exploits
Credits
finder
HE WEI (ギカク)
reporter
David Carliez
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/googleapis/mcp-toolbox/pull/3435
N/A
Hyperlink: https://github.com/googleapis/mcp-toolbox/pull/3435
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found