---
id: CVE-2026-19338
title: A vulnerability was identified in automateyournetwork MCPyATS up to 0.1.4
summary: >-
  A vulnerability was identified in automateyournetwork MCPyATS up to 0.1.4. The
  affected element is the function processGenerateRequest of the file
  mcp_servers/mermaid/index.ts of the component generate_mermaid_markdown. The
  manipulation …
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-22
published: '2026-08-09'
updated: '2026-08-09'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19338'
references:
  - url: 'https://github.com/automateyournetwork/MCPyATS/'
    label: cna@vuldb.com
  - url: 'https://github.com/automateyournetwork/MCPyATS/issues/22'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-19338'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/865262'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/387174'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/387174/cti'
    label: cna@vuldb.com
tags:
  - nvd
epss: 0.00172
epssPercentile: 0.05816
ingestedAt: '2026-08-09T17:33:47.193Z'
---

## Overview

A vulnerability was identified in automateyournetwork MCPyATS up to 0.1.4. The affected element is the function processGenerateRequest of the file mcp_servers/mermaid/index.ts of the component generate_mermaid_markdown. The manipulation of the argument folder/name leads to path traversal. The attack must be carried out locally.

## Remediation

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