SEPTEMBER 19, 2026
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Case File

CVE-2026-18654

MEDIUM · CVSS 6.8 EPSS 0.29% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-03 · Last synced 2026-09-02

CyberRota Analysis

AI-Generated

The vulnerability affects the Amazon AWS CLI, specifically in the EMR SSH helper commands, allowing man-in-the-middle attackers to intercept SSH sessions and file transfers due to a lack of entity authentication during key exchange. Organizations using affected versions of the AWS CLI should prioritize upgrading to at least version 1.45.28 for AWS CLI v1 or 2.35.3 for AWS CLI v2 to mitigate the risk of unauthorized access and data interception. This is particularly critical for users managing sensitive data or operating in regulated environments.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-18654
Severity
MEDIUM
CVSS
6.8
EPSS
0.29%
Exchange

Original NVD Description

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.