CVE-2026-18953
8.6
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| AWS | aws-transform-mcp-server | 0.1.0 <= 0.1.4 | affected |
Weaknesses
- CWE-22: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
References
- https://pypi.org/project/awslabs.aws-transform-mcp-server/0.1.5/
- https://aws.amazon.com/security/security-bulletins/2026-075-aws/
- https://github.com/awslabs/mcp/security/advisories/GHSA-66mr-jr63-2jgw
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