samanhappy MCPHub up to 1.0.31 Prompt/Resource Controllers /api/prompts handleGetPromptRequest/handleReadResourceRequest privileges management

Summaryinfo

A vulnerability marked as problematic has been reported in samanhappy MCPHub up to 1.0.31. This issue affects the function handleGetPromptRequest/handleReadResourceRequest of the file /api/prompts of the component Prompt/Resource Controllers. Performing a manipulation results in privileges management. This vulnerability is identified as CVE-2026-79745. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in samanhappy MCPHub up to 1.0.31. It has been classified as problematic. This affects the function handleGetPromptRequest/handleReadResourceRequest of the file /api/prompts of the component Prompt/Resource Controllers. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-79745 since 08/25/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 1.0.32 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• samanhappy

Name

• MCPHub

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.0.7
• 1.0.8
• 1.0.9
• 1.0.10
• 1.0.11
• 1.0.12
• 1.0.13
• 1.0.14
• 1.0.15
• 1.0.16
• 1.0.17
• 1.0.18
• 1.0.19
• 1.0.20
• 1.0.21
• 1.0.22
• 1.0.23
• 1.0.24
• 1.0.25
• 1.0.26
• 1.0.27
• 1.0.28
• 1.0.29
• 1.0.30
• 1.0.31

Website

• Product: https://github.com/samanhappy/mcphub/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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