---
id: CVE-2026-79749
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 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts
  uses a cus…
severity: none
cwe:
  - CWE-918
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-2026-79749'
references:
  - url: >-
      https://github.com/samanhappy/mcphub/commit/2b10ae36112ce68deebf910b22505d44efcef552
    label: security-advisories@github.com
  - url: 'https://github.com/samanhappy/mcphub/pull/1069'
    label: security-advisories@github.com
  - url: 'https://github.com/samanhappy/mcphub/releases/tag/v1.0.32'
    label: security-advisories@github.com
  - url: >-
      https://github.com/samanhappy/mcphub/security/advisories/GHSA-pr4x-3pc7-2fhw
    label: security-advisories@github.com
  - url: >-
      https://github.com/samanhappy/mcphub/security/advisories/GHSA-pr4x-3pc7-2fhw
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00449
epssPercentile: 0.36297
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 1.0.32, MCPHub's SSRF guard in src/utils/ssrf.ts uses a custom isBlockedIpv6 function that only checks for loopback, link-local, unique-local, IPv4-mapped, and IPv4-compatible IPv6 addresses. IPv6 transition address families -- NAT64 (64:ff9b::/96), 6to4 (2002::/16), and Teredo (2001::/32) -- are not checked. An attacker who can specify a URL for an MCP server connection can encode a private IPv4 address inside one of these IPv6 forms to bypass the SSRF guard and reach internal infrastructure. This issue has been patched in version 1.0.32.

## Remediation

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