CVE-2026-18654 — Disabled SSH host key verification in Amazon AWS CLI EMR helper commands
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 t…
Published: 2026-08-03 · CVSS: 6.9 · CVSS 4.0
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 remediate this issue, users should upgrade to AWS CLI v1 1.45.28 or later, or AWS CLI v2 2.35.3 or later.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7