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CVE-2026-16584 AWS API MCP Server Security Policy Bypass via Startup Failure

🗓️ 23 Jul 2026 15:34:11Reported by AMZNType 
cvelist
 cvelist
🔗 www.cve.org👁 60 Views

Policy bypass after startup failure in Amazon Web Services API server may permit denied operations; upgrade to 1.3.47.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-16584
23 Jul 202615:34
–attackerkb
circl
Circl
CVE-2026-16584
23 Jul 202617:04
–circl
cve
CVE
CVE-2026-16584
23 Jul 202615:34
–cve
euvd
EUVD
EUVD-2026-48299
24 Jul 202622:33
–euvd
github
Github Security Blog
AWS API MCP Server Security Policy Bypass via Startup Initialization Failure
24 Jul 202622:33
–github
mend
Mend
CVE-2026-16584
23 Jul 202615:34
–mend
nvd
NVD
CVE-2026-16584
23 Jul 202616:17
–nvd
osv_ghsa
osv_ghsa
GHSA-29W2-FQ35-V728 AWS API MCP Server Security Policy Bypass via Startup Initialization Failure
24 Jul 202622:33
–osv_ghsa
osv_pysec
osv_pysec
PYSEC-2026-3549 AWS API MCP Server Security Policy Bypass via Startup Initialization Failure
4 Aug 202611:34
–osv_pysec
ptsecurity
Positive Technologies
PT-2026-64006
23 Jul 202600:00
–ptsecurity
Rows per page
[
  {
    "vendor": "AWS",
    "product": "aws-api-mcp-server",
    "versions": [
      {
        "status": "affected",
        "version": "0.2.13",
        "lessThan": "1.3.47",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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23 Jul 2026 15:37Current
CVSS 3.17
CVSS 47.3
EPSS0.00227
SSVC
60