HIGH

CVE-2026-79750

MCPHub authenticated horizontal IDOR: any non-admin user executes tools on other users' MCP servers (cross-tenant file read + SSRF)

CVSS v3

7.7

HIGH

EPSS Score

0.4 %

exploit probability, as of 2026-09-28

CISA KEV

known exploited

Exploitation

—

SSVC status

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 1.0.30, 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

Technical details

Published: 2026-08-31
Last Modified: 2026-09-02

Frequently asked questions

What is CVE-2026-79750?

Is CVE-2026-79750 actively exploited?

Active exploitation of CVE-2026-79750 has not been confirmed. Its EPSS score was 0.4% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-79750?

CVE-2026-79750 has a CVSS v3 base score of 7.7 (HIGH severity).

Is CVE-2026-79750 affecting your environment?

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