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Vulnerability DatabaseCVE-2026-4270

CVE-2026-4270: 
Python vulnerability analysis and mitigation

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.

Source: NVD

Related Python vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-33641HIGH7.8
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NoNoApr 02, 2026
CVE-2026-34591HIGH7.1
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CVE-2026-33533HIGH7.1
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CVE-2026-34730MEDIUM5.5
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CVE-2026-34726MEDIUM4.4
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