RewindexCVEsAmazon Web Services
CVE-2026-18654: Disabled SSH host key verification in Amazon AWS CLI EMR helper commands
Medium · CVSS 6.8 (CVSS 3.1)EPSS 0.46%, 40th percentilePublished Updated Assigner: AMZN
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.
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N · CWE-322
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
AWS: aws-cli
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- aws.amazon.com/security/security-bulletins/2026-071-aws/ (opens in new tab)
- github.com/aws/aws-cli/blob/develop/CHANGELOG.rst (opens in new tab)
- github.com/aws/aws-cli/blob/v2/CHANGELOG.rst (opens in new tab)
- github.com/aws/aws-cli/security/advisories/GHSA-hqvf-45jj-mccq (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)