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TI-2026-55224 Aliases CVE-2026-79743

MCPHub: Path Traversal via Malicious MCPB Manifest Name

Priority HIGH 70CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

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 0.12.13, MCPB File Upload Handler extracts a ZIP file and reads manifest.json from it. The name field in the manifest is directly concatenated into a file path (line 107) without any sanitization or path traversal character validation. An attacker can craft a malicious MCPB file where manifest.name is set to something like ../../../etc/malicious, causing the file to be extracted to an arbitrary location on the file system. The cleanupOldMcpbServer function (line 110) also uses the unsanitized name, potentially allowing deletion of arbitrary directories. This issue has been patched in version 0.12.13.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00537 45th percentileScored 2026-11-07
Fix Fixed mcphub (samanhappy): 0.12.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

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 0.12.130.12.13Patch availableCNA
  • mcphub Vendorsamanhappy Affected before 0.12.13 Fixed in 0.12.13 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 0.12.13

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-79743

References

Other 3

  • 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-2026-55225 MCPHub: Missing Authorization on `PUT /api/system-config` Lets Any Non-Admin Rewrite Global Security Configuration CVSS 3.1HIGH 8.8
  • 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