CVE-2026-100307 – Missing authorization on the external management API in mcp-gateway-registry enables privilege escalation to registry administrator

Bulletin ID: 2026-179-AWS
Publication Date: 11/11/2026 12:30 PM PST

Description:

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.

Impacted versions: >= 1.0.9 AND <= 1.24.7

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