CVE-2026-79745: MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/AP…
- Occurred
- Aug 31, 2026
- Published
- Aug 31, 2026
- Source
- NVD CVE
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, the built-in prompt and resource controllers perform no role checking. The mutating POST/PUT /api/prompts* and POST/PUT /api/resources* routes are attached to the authenticated router with no admin gate, and the handlers never read req.user. The DAO singletons they write are consulted first — ahead of any connected MCP server — for every session in handleGetPromptRequest / handleReadResourceRequest. A non-admin can therefore create, overwrite, and shadow global prompt templates and resources that all other users are served. The scored impact is the unauthorized integrity violation (creation/tampering/shadowing of globally-served records); stored prompt injection into other users' LLM sessions is a downstream consequence of that tampering. This issue has been patched in version 1.0.32.
Tags
- CVE
- CVE-2026-79745
- cvss:HIGH
Classification
Rationale: Unauthorized access to modify global prompt templates and resources affects data integrity and user privacy.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8