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cve recordmedium

CVE-2026-4270

amazon · aws api mcp server

Published
CVSS5.5
Severitymedium
WeaknessCWE-424
ExploitedNot in CISA KEV

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Description

Improper Protection of Alternate Path exists in the no-access and workdir feature of the AWS API MCP Server versions >= 0.2.14 and < 1.3.9 on all platforms may allow the bypass of intended file access restriction and expose arbitrary local file contents in the MCP client application context. To remediate this issue, users should upgrade to version 1.3.9.

References

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