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.

CVSS Vector

References

• https://aws.amazon.com/security/security-bulletins/2026-075-aws/
• https://github.com/awslabs/mcp/security/advisories/GHSA-66mr-jr63-2jgw
• https://pypi.org/project/awslabs.aws-transform-mcp-server/0.1.5/