CVE-2026-18953

Published: Aug 5, 2026Modified: Aug 10, 2026

6.3

Vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/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

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CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/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:XShow less

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5 (Secondary)

Description

Improper limitation of a pathname to a restricted directory in the get_resource tool in Amazon awslabs.aws-transform-mcp-server 0.1.0 through 0.1.4 might allow a context-dependent actor to write arbitrary files outside the intended working directory via the savePath parameter. To remediate this issue, users should upgrade to version 0.1.5 or later.

Affected (1)

Products: Amazon: Aws Transform Mcp Server

1 product

Aws Transform Mcp Server

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Amazon Aws Transform Mcp Server	From 0.1.0 to 0.1.5

Related CWEs

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

References (3)

https://aws.amazon.com/security/security-bulletins/2026-075-aws/

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Vendor Advisory

https://github.com/awslabs/mcp/security/advisories/GHSA-66mr-jr63-2jgw

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Vendor Advisory

https://pypi.org/project/awslabs.aws-transform-mcp-server/0.1.5/

Source: ff89ba41-3aa1-4d27-914a-91399e9639e5

Product

Timeline

No history available yet.