High 8.6Published Aug 5, 2026

CVE-2026-18953Improper limitation of a pathname to a restricted directory in aws-transform-mcp-server

Updated under an hour ago (2026-10-19 07:10 UTC)

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It affects aws-transform-mcp-server and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for aws-transform-mcp-server

Exploited in the last 30 days

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: 8.6 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-22
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: AMZN
NVD analysis: Analyzed
Record last updated: Aug 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

AWS aws-transform-mcp-server aws:transform_mcp_server (from the name)	from 0.1.0 through 0.1.4	CNA record
amazon aws_transform_mcp_server amazon:aws_transform_mcp_server	from 0.1.0 before 0.1.5	NVD

References

https://pypi.org/project/awslabs.aws-transform-mcp-server/0.1.5/release-notes, patch, product
https://aws.amazon.com/security/security-bulletins/2026-075-aws/vendor-advisory
https://github.com/awslabs/mcp/security/advisories/GHSA-66mr-jr63-2jgwrelease-notes, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.