CVE-2026-18953

medium

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.

References

https://aws.amazon.com/security/security-bulletins/2026-075-aws/

https://pypi.org/project/awslabs.aws-transform-mcp-server/0.1.5/

https://github.com/awslabs/mcp/security/advisories/GHSA-66mr-jr63-2jgw

Details

Source: Mitre, NVD

Published: 2026-08-05

Updated: 2026-08-06

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.6

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Severity: High

CVSS v4

Base 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

Severity: Medium

EPSS

EPSS: 0.00149