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 (Oct 27, 2026, 5:40 AM ET)

Does this affect you?

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.

Do this next

Start free and add your stack

Free account, 1 product

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

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-jr63-2jgw	release-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.