CVE-2026-18654 - Disabled SSH host key verification in AWS CLI EMR helper commands

Update AWS CLI to versions 1.45.28 or 2.35.3 to resolve CVE-2026-18654, which disabled SSH host key verification in EMR helper commands, to prevent security vulnerabilities and ensure secure SSH sessions and file transfers.

Deploy the latest versions of AWS CLI to incorporate fixes for CVE-2026-18654, enhancing the security posture of EMR clusters by enabling SSH host key verification and protecting against potential man-in-the-middle attacks.

Implement immediate upgrades to AWS CLI to address CVE-2026-18654 and mitigate security risks associated with disabled SSH host key verification in EMR helper commands, ensuring secure management of EMR clusters and protecting against potential man-in-the-middle attacks.