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CVE-2026-79745— MCPHub: Missing Authorization on Built-in Prompt & Resource CRUD (Unauthorized Tampering of Globally-Served Templates/Resources)

Quick assessment

Affected
samanhappy mcphub
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MCPHub 是一个统一中枢，用于集中管理和动态编排多个 MCP 服务器/API，将其映射到独立端点，并支持灵活的路由策略。 在 1.0.32 版本之前，内置的提示词（prompt）和资源控制器未执行任何角色检查。可变的 和 路由挂载在已认证路由上，但缺少管理员权限门控，且处理函数从未读取 。 它们写入的 DAO 单例会在所有会话中被优先查询——早于任何已连接的 MCP 服务器——在 / 中也是如此。因此，非管理员用户能够创建、覆盖并遮蔽（shadow）供所有其他用户使用的全局提示词模板和资源。 评估后的影响主要体

CVSS 7.1 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
samanhappy mcphub < 1.0.32 affected
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I. Basic Information for CVE-2026-79745

Vulnerability Information
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Vulnerability Title
MCPHub: Missing Authorization on Built-in Prompt & Resource CRUD (Unauthorized Tampering of Globally-Served Templates/Resources)
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
samanhappy mcphub < 1.0.32 -

II. Public POCs for CVE-2026-79745

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III. Intelligence Information for CVE-2026-79745

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Other References for CVE-2026-79745 (3)

Same Patch Batch · samanhappy · 2026-08-31 · 8 CVEs total

CVE-2026-79748 9.9 CRITICAL MCPHub: Authenticated non-admin user achieves RCE via POST /api/servers (missing authoriza
CVE-2026-79744 8.8 HIGH MCPHub: Missing Authorization on `PUT /api/system-config` Lets Any Non-Admin Rewrite Globa
CVE-2026-79746 8.1 HIGH MCPHub: Server-scoped bearer key gains access to an entire group via partial (any-overlap)
CVE-2026-79750 7.7 HIGH MCPHub authenticated horizontal IDOR: any non-admin user executes tools on other users' MC
CVE-2026-79749 7.6 HIGH MCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL Validation
CVE-2026-79747 7.1 HIGH MCPHub vulnerable to SSRF: a non-admin user can make mcphub request arbitrary URLs and rea
CVE-2026-79743 6.9 MEDIUM MCPHub: Path Traversal via Malicious MCPB Manifest Name

IV. Related Vulnerabilities

Same product: mcphub
Same vendor: samanhappy
Same weakness: CWE-862

V. Comments for CVE-2026-79745

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