AUGUST 4, 2026
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Case File

CVE-2026-4270

MEDIUM · CVSS 5.5 EPSS 0.13%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-03-16 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.5. See the original NVD description below for full technical details.

CVE
CVE-2026-4270
Severity
MEDIUM
CVSS
5.5
EPSS
0.13%

Original NVD 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.

Related CVEs

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