What’s Vulnerable › Vulnerabilities

CVE-2026-79744: MCPHub: Missing Authorization on `PUT /api/system-config` Lets Any Non-Admin Rewrite Global Security Configuration

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-31 · updated 2026-09-08
• Weakness: CWE-269

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 1.0.29, MCPHub's PUT /api/system-config endpoint (handler updateSystemConfig) performs no authorization check. It is protected only by the app-wide authentication middleware and a rate limiter — it never inspects req.user.isAdmin. This issue has been patched in version 1.0.29.

Affected products

• samanhappy mcphub: before 1.0.29

References

• https://github.com/samanhappy/mcphub/releases/tag/v1.0.29
• https://github.com/samanhappy/mcphub/security/advisories/GHSA-4gc8-885f-qj36
• https://github.com/samanhappy/mcphub/security/advisories/GHSA-4gc8-885f-qj36

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