Bug 2510797 (CVE-2026-18654) - CVE-2026-18654 aws-cli: AWS CLI: Information disclosure due to disabled SSH host key verification
Summary: CVE-2026-18654 aws-cli: AWS CLI: Information disclosure due to disabled SSH h...
Keywords:
Status: NEW
Alias: CVE-2026-18654
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-03 21:02 UTC by OSIDB Bzimport
Modified: 2026-09-01 07:44 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-08-03 21:02:45 UTC 
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.
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