6.8

CVE-2026-4270

AWS API MCP File Access Restriction Bypass

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Amazon ≫ Aws Api Mcp Server SwPlatformpython Version >= 0.2.14 < 1.3.9
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.13% 0.029
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
ff89ba41-3aa1-4d27-914a-91399e9639e5 6.8 0 0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
ff89ba41-3aa1-4d27-914a-91399e9639e5 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE-424 Improper Protection of Alternate Path

The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources.

https://aws.amazon.com/security/security-bulletins/2026-007-AWS/
Vendor Advisory
https://pypi.org/project/awslabs.aws-api-mcp-server/1.3.9/
Third Party Advisory