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CVE-2026-4270 AWS API MCP File Access Restriction Bypass

🗓️ 16 Mar 2026 16:07:53Reported by AMZNType 
vulnrichment
 vulnrichment
🔗 github.com

CVE-2026-4270: Amazon Web Services MCP server file access bypass via alternate path; upgrade to 1.3.9.

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16 Mar 2026 16:17Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.5
CVSS 46.8
EPSS0.00019
SSVC
0