Missing authorization in the external management API in Amazon mcp-gateway-registry 1.0.9 through 1.24.7 might allow an authenticated remote user to assign the registry administrator scope to their own identity group and obtain administrative control of every registered gateway asset via a crafted group import request.
To remediate this issue, users should upgrade to version 1.25.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://aws.amazon.com/security/security-bulletins/2026-179-aws/
ff89ba41-3aa1-4d27-914a-91399e9639e5
https://github.com/agentic-community/mcp-gateway-registry/releases/tag/1.25.0
ff89ba41-3aa1-4d27-914a-91399e9639e5
https://github.com/agentic-community/mcp-gateway-registry/security/advisories/G…
ff89ba41-3aa1-4d27-914a-91399e9639e5