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CVE-2026-79746: CWE-863: Incorrect Authorization in samanhappy mcphub

0
High
VulnerabilityCVE-2026-79746cvecve-2026-79746cwe-863
Published: 08/31/2026 (08/31/2026, 17:55:43 UTC)
Source: CVE Database V5
Vendor/Project: samanhappy
Product: mcphub

Description

MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.31, when a bearer key with accessType: 'servers' (or 'custom') is used against a group route, isBearerKeyAllowedForRequest grants access to the entire group as long as any single server in that group appears in the key's allowedServers list — not only when every server the key is scoped to matches, and critically, without ever re-checking allowedServers again once the group-level connection is authorized. A key explicitly scoped to one specific server therefore also grants full access to every other server that happens to share a group with it, including servers the key was never authorized for. This issue has been patched in version 1.0.31.

CVSS v3.1

Score 8.1high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Technical Details

Data Version
5.2
Assigner Short Name
GitHub_M
Date Reserved
2026-08-25T14:08:18.108Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a95c2eeacd9273b496c0dd9

Added to database: 08/31/2026, 18:07:42 UTC

Last updated: 08/31/2026, 19:22:13 UTC

Views: 6

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