CVE-2026-79745: falha de alta gravidade em samanhappy mcphub
MCPHub: Missing Authorization on Built-in Prompt & Resource CRUD (Unauthorized Tampering of Globally-Served Templates/Resources)
Publicada em · Atualizada em
Aviso por e-mail quando ela entrar no KEV, ganhar PoC pública ou subir de nota.
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.1epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Produtos afetados
samanhappy · mcphubCVEs relacionadas — samanhappy mcphub
No mesmo produto, das mais perigosas para as menos.
CVE-2026-79748CRITICALMCPHub: Authenticated non-admin user achieves RCE via POST /api/servers (missing authorization on stdio command/args)EPSS 0.6%CVE-2026-79744HIGHMCPHub: Missing Authorization on `PUT /api/system-config` Lets Any Non-Admin Rewrite Global Security ConfigurationEPSS 0.6%CVE-2026-90474HIGHMCPHub before 1.0.32 OAuth 2.0 Authentication BypassEPSS 0.6%CVE-2026-79743MEDIUMMCPHub: Path Traversal via Malicious MCPB Manifest NameEPSS 0.5%CVE-2026-79749HIGHMCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL ValidationEPSS 0.4%CVE-2026-79750HIGHMCPHub authenticated horizontal IDOR: any non-admin user executes tools on other users' MCP servers (cross-tenant file read + SSRF)EPSS 0.4%