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CVE-2026-18654

🗓️ 03 Aug 2026 19:38:51Reported by AMZNType 
cve
 cve
🔗 web.nvd.nist.gov👁 106 Views

Key exchange in EMR SSH helper of AWS CLI lacks authentication, enabling man-in-the-middle; upgrade to AWS CLI 1.45.28+ or 2.35.3+.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-18654
3 Aug 202619:38
attackerkb
cgr
Chainguard
CVE-2026-18654 vulnerabilities
15 Aug 202608:28
cgr
circl
Circl
CVE-2026-18654
6 Aug 202612:15
circl
cvelist
Cvelist
CVE-2026-18654 Disabled SSH host key verification in Amazon AWS CLI EMR helper commands
3 Aug 202619:38
cvelist
euvd
EUVD
EUVD-2026-52415
6 Aug 202620:15
euvd
github
Github Security Blog
AWS CLI: Disabled SSH host key verification in Amazon AWS CLI EMR helper commands
6 Aug 202620:15
github
nvd
NVD
CVE-2026-18654
3 Aug 202620:17
nvd
osv
OSV
CGA-2JGC-WHFR-56VQ
7 Aug 202609:16
osv
osv
OSV
CGA-G8HV-HXQ6-FXMR
7 Aug 202610:33
osv
osv
OSV
CGA-P48R-WJ7X-P8HX
15 Aug 202600:52
osv
Rows per page
CNA
Node
OR
awsaws-cliRange01.45.27
awsaws-cliRange02.35.2
[
  {
    "vendor": "AWS",
    "product": "aws-cli",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThanOrEqual": "1.45.27",
        "versionType": "custom"
      },
      {
        "status": "affected",
        "version": "0",
        "lessThanOrEqual": "2.35.2",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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04 Aug 2026 20:16Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.16.8
CVSS 46.9
EPSS0.00291
SSVC
106