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.

Attack Vector Local

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00149.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AWS aws-transform-mcp-server unaffected
Version Status Constraints
0.1.0 affected ≤ 0.1.4

No data.

No data.

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Project Subscriptions

Vendors Products
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Aws-transform-mcp-server Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Thu, 06 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 05 Aug 2026 21:15:00 +0000

Type Values Removed Values Added
References

Wed, 05 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title Improper limitation of a pathname to a restricted directory in aws-transform-mcp-server
First Time appeared Aws
Aws aws-transform-mcp-server
Weaknesses CWE-22
CPEs cpe:2.3:a:aws:aws-transform-mcp-server:*:*:*:*:*:*:*:*
Vendors & Products Aws
Aws aws-transform-mcp-server
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2026-08-06T14:51:50.363Z

Reserved: 2026-08-05T13:44:42.972Z

Link: CVE-2026-18953

cve-icon Vulnrichment

Updated: 2026-08-06T14:51:44.254Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-05T20:30:06Z

Weaknesses