MCPHub vulnerable to SSRF: a non-admin user can make mcphub request arbitrary URLs and read the response (OpenAPI proxy + transport dial)
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, an authenticated non-admin user can register a server pointing at an arbitrary URL and make the hub issue server-side requests to it, with no egress filtering (no block of loopback / RFC1918 / link-local 169.254.0.0/16). Via the OpenAPI proxy path the response body is returned to the caller (full, reflected SSRF); via the SSE/streamable-http transport the request is sent blind. This issue has been patched in version 1.0.32.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-79747
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 15:14 UTC · Revision 1
Source evidence
MCPHub vulnerable to SSRF: a non-admin user can make mcphub request arbitrary URLs and read the response (OpenAPI proxy + transport dial)
core-osv · Original sourcePublished 31 Aug 2026, 17:55 UTC
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, an authenticated non-admin user can register a server pointing at an arbitrary URL and make the hub issue server-side requests to it, with no egress filtering (no block of loopback / RFC1918 / link-local 169.254.0.0/16). Via the OpenAPI proxy path the response body is returned to the caller (full, reflected SSRF); via the SSE/streamable-http transport the request is sent blind. This issue has been patched in version 1.0.32.
osv:CVE-2026-79747
Complete source record
{
"id": "9533322c22230e749e0e7b2518988f325ebd6d501db27e6084147efd8e05f886",
"url": "https://osv.dev/vulnerability/CVE-2026-79747",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "MCPHub vulnerable to SSRF: a non-admin user can make mcphub request arbitrary URLs and read the response (OpenAPI proxy + transport dial)",
"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, an authenticated non-admin user can register a server pointing at an arbitrary URL and make the hub issue server-side requests to it, with no egress filtering (no block of loopback / RFC1918 / link-local 169.254.0.0/16). Via the OpenAPI proxy path the response body is returned to the caller (full, reflected SSRF); via the SSE/streamable-http transport the request is sent blind. This issue has been patched in version 1.0.32.",
"evidence": "osv:CVE-2026-79747",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-79747",
"aliases": [
"CVE-2026-79747",
"GHSA-9wx9-prgc-gmjr"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/samanhappy/mcphub",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "20e3ba73aea03c493669f90526436a9a576f9c6c"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.0.32"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "20e3ba73aea03c493669f90526436a9a576f9c6c"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.0.32"
},
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.0.32"
}
],
"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"v1.0.31",
"v1.0.30",
"v1.0.29",
"v1.0.28",
"v1.0.27",
"v1.0.26",
"v1.0.25",
"v1.0.24",
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"v0.12.3",
"v0.12.2",
"v0.12.1",
"v0.12.0",
"v0.11.13",
"v0.11.12",
"v0.11.11",
"v0.11.10",
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"v0.11.5",
"v0.11.4",
"v0.11.3",
"v0.11.2",
"v0.11.1",
"v0.11.0",
"v0.10.6",
"v0.10.5",
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"v0.9.3",
"v0.9.2",
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"v0.8.0",
"v0.7.7",
"v0.7.6",
"v0.7.5",
"v0.7.4",
"v0.7.3",
"v0.7.2",
"v0.7.1",
"v0.7.0",
"v0.6.2",
"v0.6.1",
"v0.6.0",
"v0.5.4",
"v0.5.3",
"v0.5.2",
"v0.5.1",
"v0.5.0",
"v0.4.3",
"v0.4.2",
"v0.4.1",
"v0.4.0",
"v0.3.8",
"v0.3.7",
"v0.3.6",
"v0.3.5",
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"v0.3.3",
"v0.3.2",
"v0.3.1",
"v0.3.0",
"v0.2.0",
"v0.1.1",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79747.json"
}
}
],
"modified": "2026-10-28T02:30:30.068976869Z",
"provider": "osv",
"references": [
"https://github.com/samanhappy/mcphub/releases/tag/v1.0.32",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79747.json",
"https://github.com/samanhappy/mcphub/security/advisories/GHSA-9wx9-prgc-gmjr",
"https://nvd.nist.gov/vuln/detail/CVE-2026-79747"
],
"provider_metadata": {
"cwe_ids": [
"CWE-918"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79747.json"
}
},
"related_cves": [
{
"value": "CVE-2026-79747",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 496719,
"published_at": "2026-08-31T17:55:20.953+00:00"
}