{"id":"CVE-2026-79745","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-79745","generatedAt":"2026-10-28T01:49:01.204Z","title":"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.","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.","published":"2026-08-31T18:17:20.000Z","lastModified":"2026-09-08T21:08:37.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L"},"cwe":["CWE-862"],"affected":[],"epss":{"score":0.00439,"percentile":0.37917,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/samanhappy/mcphub/commit/6ba55ac63954a71506e61c088753251e2ff643cf","source":"security-advisories@github.com"},{"url":"https://github.com/samanhappy/mcphub/pull/1069","source":"security-advisories@github.com"},{"url":"https://github.com/samanhappy/mcphub/releases/tag/v1.0.32","source":"security-advisories@github.com"},{"url":"https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m","source":"security-advisories@github.com"},{"url":"https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-79745","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}