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CVE-2026-81091

🗓️ 27 Aug 2026 14:50:32Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 38 Views🌐 WEB

SSRF in mcp-use Inspector proxy via caller-supplied target URL reaches internal addresses.

Related
Detection
Affected
Refs
Paths
Vulners
Node
mcp-usemcp-useRange02.3.2
[
  {
    "vendor": "mcp-use",
    "product": "mcp-use",
    "collectionURL": "https://github.com/mcp-use/mcp-use",
    "repo": "https://github.com/mcp-use/mcp-use",
    "defaultStatus": "unaffected",
    "versions": [
      {
        "version": "0",
        "lessThanOrEqual": "2.3.2",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
X-Target-URLheaderlibraries/typescript/packages/inspector/src/server/proxy/mcp-proxy.tsProxy forwards requests to a caller-specified destination without proper host validation, allowing access to loopback/private addresses; potential SSRF via proxy target header or parameter.CWE-918
__mcp_targetheaderlibraries/typescript/packages/inspector/src/server/proxy/mcp-proxy.tsProxy forwards requests to a caller-specified destination without proper host validation, allowing access to loopback/private addresses; potential SSRF via proxy target header or parameter.CWE-918

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29 Aug 2026 11:48Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.18.6
CVSS 48.7
EPSS0.00342
SSVC
38