Amazon Linux 2023 : awscli-2 (ALAS2023-2026-3133)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3133 advisory. Overly permissive file permissions in AWS CLI before 1.44.78 v1 and 2.34.29 v2 on Unix-like systems where the umask has not been configured to restrict file permissions the default on most...

CVE-2026-18654

This CVE (CVE-2026-18654) affects the EMR SSH helper commands in the Amazon AWS CLI. The issue is “Key exchange without entity authentication,” enabling potential MITM attackers to intercept SSH sessions and file transfers when connecting to an EMR cluster endpoint. Affected products are AWS CLI ...

CVE-2026-18654: Key Exchange without Entity Authentication

Key exchange without entity authentication in the EMR SSH helper commands in Amazon AWS CLI before 1.45.28 and AWS CLI v2 before 2.35.3 might allow man-in-the-middle attackers to intercept SSHsessions and file transfers via network positioning between the client and the EMR cluster endpoint. To...