---
id: CVE-2026-79746
title: >-
  MCPHub is a unified hub for centrally managing and dynamically orchestrating
  multiple MCP servers/APIs into separate endpoints with flexible routing
  strategies
summary: >-
  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 'c…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-863
published: '2026-08-31'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T21:08:37.320'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79746'
references:
  - url: >-
      https://github.com/samanhappy/mcphub/commit/2b10ae36112ce68deebf910b22505d44efcef552
    label: security-advisories@github.com
  - url: 'https://github.com/samanhappy/mcphub/pull/1059'
    label: security-advisories@github.com
  - url: 'https://github.com/samanhappy/mcphub/releases/tag/v1.0.31'
    label: security-advisories@github.com
  - url: >-
      https://github.com/samanhappy/mcphub/security/advisories/GHSA-454m-4vm6-842f
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00252
epssPercentile: 0.16975
ingestedAt: '2026-09-08T21:11:12.288Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.