---
id: CVE-2026-116635
title: >-
  Improper limitation of a pathname to a restricted directory in the deployment
  status component of the AWS Serverless MCP Server
summary: >-
  Improper limitation of a pathname to a restricted directory in the deployment
  status component of the AWS Serverless MCP Server (aws-serverless-mcp-server)
  before v0.2.1 might allow an actor who can influence the MCP agent to read the
  co…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-23
  - CWE-36
vendor: AWS
product: aws-serverless-mcp-server
affected:
  - aws-serverless-mcp-server < 0.2.1
published: '2026-11-02'
updated: '2026-11-02'
sourceUpdated: '2026-11-02T21:34:09.483Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116635'
references:
  - url: 'https://pypi.org/project/awslabs.aws-serverless-mcp-server/0.2.1/'
  - url: 'https://aws.amazon.com/security/security-bulletins/2026-164-aws/'
  - url: 'https://github.com/awslabs/mcp/security/advisories/GHSA-r6mm-377j-qg8m'
tags:
  - cve.org
epss: 0.00313
epssPercentile: 0.24328
ingestedAt: '2026-11-05T19:30:42.859Z'
---

## Overview

Improper limitation of a pathname to a restricted directory in the deployment status component of the AWS Serverless MCP Server (aws-serverless-mcp-server) before v0.2.1 might allow an actor who can influence the MCP agent to read the contents of JSON files outside the intended deployment status directory. Where write access has been enabled, to create or overwrite JSON files outside that directory. This issue is reachable through directory traversal sequences or an absolute path supplied in the project name input.



To remediate this issue, users should upgrade to version v0.2.1.

## Affected

- `aws-serverless-mcp-server < 0.2.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.