{"id":"CVE-2026-79745","state":"PUBLISHED","title":"MCPHub: Missing Authorization on Built-in Prompt & Resource CRUD (Unauthorized Tampering of Globally-Served Templates/Resources)","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.","publishedAt":"2026-08-31T17:56:17.622Z","updatedAt":"2026-09-02T14:06:49.777Z","severity":{"score":7.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["samanhappy mcphub"],"affected":[{"vendor":"samanhappy","product":"mcphub","versions":[{"version":"< 1.0.32","status":"affected"}]}],"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"],"weaknesses":["CWE-862"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/79xxx/CVE-2026-79745.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-79745","state":"PUBLISHED","datePublished":"2026-08-31T17:56:17.622Z","dateUpdated":"2026-09-02T14:06:49.777Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-25T14:08:18.108Z"},"containers":{"cna":{"title":"MCPHub: Missing Authorization on Built-in Prompt & Resource CRUD (Unauthorized Tampering of Globally-Served Templates/Resources)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"samanhappy","product":"mcphub","versions":[{"version":"< 1.0.32","status":"affected"}]}],"references":[{"url":"https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m","name":"https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/samanhappy/mcphub/pull/1069","name":"https://github.com/samanhappy/mcphub/pull/1069","tags":["x_refsource_MISC"]},{"url":"https://github.com/samanhappy/mcphub/commit/6ba55ac63954a71506e61c088753251e2ff643cf","name":"https://github.com/samanhappy/mcphub/commit/6ba55ac63954a71506e61c088753251e2ff643cf","tags":["x_refsource_MISC"]},{"url":"https://github.com/samanhappy/mcphub/releases/tag/v1.0.32","name":"https://github.com/samanhappy/mcphub/releases/tag/v1.0.32","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-31T17:56:17.622Z"},"source":{"advisory":"GHSA-6cvf-cfch-4g7m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-02T14:06:14.995933Z","id":"CVE-2026-79745","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-02T14:06:49.777Z"}}]}}}