What is CVE-2026-79750?

CVE-2026-79750 is a high-severity vulnerability in Samanhappy Mcphub, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.7/10. Published 2026-08-31.

How severe is CVE-2026-79750?

High severity. CVSS v3 base score is 7.7 out of 10.

Auth bypass in Samanhappy Mcphub

CVE-2026-79750

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 1.0.30, MCPHub scopes non-admin users to servers they own (list views and config edits enforce ownership), but the tool-execution API does not. Any authenticated non-admin user can invoke tools on MCP servers owned by other users — servers they cannot even see in GET /api/servers. Because connected MCP servers carry real capability (filesystem, HTTP fetch, cloud APIs with the owner's keys), this is cross-tenant compromise: demonstrated arbitrary host file read (/etc/passwd, another user's secrets) and SSRF. This issue has been patched in version 1.0.30.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

Affected products

Samanhappy Mcphub — versions < 1.0.30

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-79750?: CVE-2026-79750 is a high-severity vulnerability in Samanhappy Mcphub, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.7/10. Published 2026-08-31.
How severe is CVE-2026-79750?: High severity. CVSS v3 base score is 7.7 out of 10.