CVE-2026-79746: Samanhappy Mcphub

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Samanhappy Mcphub: before 1.0.31 (fixed in 1.0.31)

Published 2026-08-31. Last modified 2026-09-08.