FKIE_CVE-2026-79748

Vulnerability from fkie_nvd - Published: 2026-08-31 18:17 - Updated: 2026-09-08 21:08
Severity
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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 0.12.15, the POST /api/servers and PUT /api/servers/:name endpoints in MCPHub create/update MCP server configurations and then immediately spawn the configured stdio process via child_process.spawn. Authentication is required, but there is no authorization check restricting these endpoints to admins, and there is no allowlist/sanitization on the command and args fields. As a result, any authenticated non-admin user can submit a server configuration with command:"/bin/sh" (or any other binary) and arbitrary args, causing MCPHub to execute the attacker-controlled process as the MCPHub server's OS user (commonly root in the published Docker image and in npx/systemd deployments). This issue has been patched in version 0.12.15.
References
security-advisories@github.comhttps://github.com/samanhappy/mcphub/pull/770
security-advisories@github.comhttps://github.com/samanhappy/mcphub/releases/tag/v0.12.15
security-advisories@github.comhttps://github.com/samanhappy/mcphub/security/advisories/GHSA-mx89-jjx9-gjr8
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/samanhappy/mcphub/security/advisories/GHSA-mx89-jjx9-gjr8
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mcphub",
          "vendor": "samanhappy",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.12.15"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 0.12.15, the POST /api/servers and PUT /api/servers/:name endpoints in MCPHub create/update MCP server configurations and then immediately spawn the configured stdio process via child_process.spawn. Authentication is required, but there is no authorization check restricting these endpoints to admins, and there is no allowlist/sanitization on the command and args fields. As a result, any authenticated non-admin user can submit a server configuration with command:\"/bin/sh\" (or any other binary) and arbitrary args, causing MCPHub to execute the attacker-controlled process as the MCPHub server\u0027s OS user (commonly root in the published Docker image and in npx/systemd deployments). This issue has been patched in version 0.12.15."
    }
  ],
  "id": "CVE-2026-79748",
  "lastModified": "2026-09-08T21:08:37.320",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.9,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-79748",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-31T18:39:58.857119Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-31T18:17:20.340",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/samanhappy/mcphub/pull/770"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/samanhappy/mcphub/releases/tag/v0.12.15"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/samanhappy/mcphub/security/advisories/GHSA-mx89-jjx9-gjr8"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/samanhappy/mcphub/security/advisories/GHSA-mx89-jjx9-gjr8"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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