Unrated severityNVD Advisory· Published Aug 5, 2026· Updated Aug 5, 2026
Improper limitation of a pathname to a restricted directory in aws-transform-mcp-server
CVE-2026-18953
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 products
2- Range: 0.1.0 - 0.1.4
- Range: 0.1.0 - 0.1.4
Patches
Vulnerability mechanics
References
3- pypi.org/project/awslabs.aws-transform-mcp-server/0.1.5/mitrerelease-notespatch
- aws.amazon.com/security/security-bulletins/2026-075-aws/mitrevendor-advisory
- github.com/awslabs/mcp/security/advisories/GHSA-66mr-jr63-2jgwmitrerelease-notes
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