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CVE-2026-4270

Estado: AnalizadaMedia (6.8)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Amazon — AWS API MCP Server

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-4270",
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          "options": [
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              "exploitation": "none"
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              "technicalImpact": "partial"
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          "timestamp": "2026-03-16T18:17:07.044936Z"
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      "url": "https://pypi.org/project/awslabs.aws-api-mcp-server/1.3.9/",
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  "vulnStatus": "Analyzed",
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      "description": [
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    },
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    }
  ],
  "lastModified": "2026-06-17T10:56:20.093",
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