Bulletin ID: 2026-140-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/20/2026 13:00 PM PDT Description: Kiro Crew is an open-source personal AI agent that can be reached from a web dashboard, a CLI, or messaging channels such as WhatsApp, and that runs tools on the operator's machine. We identified CVE-2026-112380, an authorization issue in the WhatsApp channel and the internal subagent run-control endpoints. In certain configurations where a WhatsApp group was added to an operator's allowed groups, or where the direct-message policy was set to open, a member of that WhatsApp group could send instructions to another session's subagent. The subagent then execu