Amazon awslabs.aws-transform-mcp-server 0.1.0-0.1.4 Pathname Traversal via savePath
CVE-2026-18953 Published on August 5, 2026
Improper limitation of a pathname to a restricted directory in aws-transform-mcp-server
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.
Vulnerability Analysis
CVE-2026-18953 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Directory traversal Vulnerability?
The software 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 software 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.
CVE-2026-18953 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-18953
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Affected Versions
aws-transform-mcp-server:- Version 0.1.0, <= 0.1.4 is affected.