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TI-2026-55225 Aliases CVE-2026-79744

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

Priority HIGH 73CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269 and CWE-862.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00555 46th percentileScored 2026-11-07
Fix Fixed mcphub (samanhappy): 1.0.29

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
samanhappymcphubbefore 1.0.291.0.29Patch availableCNA
  • mcphub Vendorsamanhappy Affected before 1.0.29 Fixed in 1.0.29 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:mcphubx:mcphub:*:*:*:*:*:*:*:*——samanhappy
  • cpe:2.3:a:mcphubx:mcphub:*:*:*:*:*:*:*:* Versions — — ·samanhappy

Remediation

  • Fix · CNA mcphub (samanhappy) Fixed in 1.0.29

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-79744

References

Other 2

  • TI-2026-55229 MCPHub: Authenticated non-admin user achieves RCE via POST /api/servers (missing authorization on stdio command/args) CVSS 3.1CRITICAL 9.9
  • TI-2026-55224 MCPHub: Path Traversal via Malicious MCPB Manifest Name CVSS 4.0MEDIUM 6.9
  • TI-2025-10335 samanhappy MCPHub sseService.ts handleSseConnectionfunction improper authentication CVSS 4.0MEDIUM 6.9
  • TI-2026-61501 MCPHub before 1.0.32 OAuth 2.0 Authentication Bypass CVSS 4.0HIGH 7.6
  • TI-2026-55230 MCPHub: SSRF Guard Bypass via IPv6 Transition Addresses in URL Validation CVSS 4.0HIGH 7.6
  • TI-2026-55231 Authorization bypass in samanhappy mcphub CVSS 3.1HIGH 7.7
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences