Authenticated internal data access via unchecked server URLs
Published Aug 31, 2026 · Updated Aug 31, 2026
SSRF in MCPHub before 1.0.32 allows remote authenticated users to read internal HTTP responses and send requests to internal services. OpenAPIClient.callTool returns response data from an attacker-controlled OpenAPI base URL, while createTransportFromConfig connects transports to an unchecked configured URL. Any authenticated non-admin account can register such a URL; OpenAPI requests expose response bodies, while transport requests remain blind.
Summary
What happened
SSRF in MCPHub before 1.0.32 allows remote authenticated users to read internal HTTP responses and send requests to internal services. OpenAPIClient.callTool returns response data from an attacker-controlled OpenAPI base URL, while createTransportFromConfig connects transports to an unchecked configured URL. Any authenticated non-admin account can register such a URL; OpenAPI requests expose response bodies, while transport requests remain blind.
The record
- CVE
- CVE-2026-79747
- Published
- Aug 31, 2026
- Updated
- Aug 31, 2026
- Vendor
- MCPHub
- Product
- MCPHub
- Classifications
- CWE-918, T1090.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 31, 2026CVE publishedPublication date reported by the CVE source.
- Aug 31, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 1.0.32
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- MCPHub advisory proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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