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CVE-2026-4270

🗓️ 16 Mar 2026 16:07:53Reported by AMZNType 
cve
 cve
🔗 web.nvd.nist.gov👁 42 Views

CVE-2026-4270: AWS API MCP Server alternate path bypasses file access; upgrade to 1.3.9.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-4270
20 Mar 202621:06
–circl
cnnvd
CNNVD
Amazon Web Services API MCP Server security vulnerabilities
16 Mar 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-4270 AWS API MCP File Access Restriction Bypass
16 Mar 202616:07
–cvelist
euvd
EUVD
EUVD-2026-12474
17 Mar 202620:33
–euvd
github
Github Security Blog
AWS API MCP File Access Restriction Bypass
17 Mar 202620:33
–github
mend
Mend
CVE-2026-4270
16 Mar 202616:07
–mend
nvd
NVD
CVE-2026-4270
16 Mar 202617:16
–nvd
osv_ghsa
osv_ghsa
GHSA-2CPP-J2FC-QHP7 AWS API MCP File Access Restriction Bypass
17 Mar 202620:33
–osv_ghsa
osv_pysec
osv_pysec
PYSEC-2026-162
16 Mar 202617:16
–osv_pysec
ptsecurity
Positive Technologies
PT-2026-25773
16 Mar 202600:00
–ptsecurity
Rows per page
NVD
Vulners
Node
amazonaws_api_mcp_serverRange0.2.14–1.3.9python
[
  {
    "vendor": "AWS",
    "product": "AWS API MCP Server",
    "versions": [
      {
        "status": "affected",
        "version": "0.2.14",
        "lessThan": "1.3.9",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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17 Jun 2026 10:56Current
6Medium risk
Vulners AI Score6
CVSS 3.15.5
CVSS 46.8
EPSS0.00188
SSVC
42