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CVE-2026-19338— automateyournetwork MCPyATS generate_mermaid_markdown index.ts processGenerateRequest path traversal

Quick assessment

Affected
automateyournetwork MCPyATS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

John Capobianco MCPyATS是John Capobianco个人开发者的一个机器学习组件。 John Capobianco MCPyATS 0.1.4及之前版本存在路径遍历漏洞，该漏洞源于在generate_mermaid_markdown组件的文件mcp_servers/mermaid/index.ts中，processGenerateRequest函数对参数folder/name操作不当，容易受到路径遍历攻击。

CVSS 5.3 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1 AI

T1552.006 · Group Policy Preferences

Affected Version Matrix 5

VendorProduct Version RangeStatus
automateyournetwork MCPyATS 0.1.0 affected
0.1.1 affected
0.1.2 affected
0.1.3 affected
0.1.4 affected
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I. Basic Information for CVE-2026-19338

Vulnerability Information
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Vulnerability Title
automateyournetwork MCPyATS generate_mermaid_markdown index.ts processGenerateRequest path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
John Capobianco MCPyATS 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
John Capobianco MCPyATS是John Capobianco个人开发者的一个机器学习组件。 John Capobianco MCPyATS 0.1.4及之前版本存在路径遍历漏洞，该漏洞源于在generate_mermaid_markdown组件的文件mcp_servers/mermaid/index.ts中，processGenerateRequest函数对参数folder/name操作不当，容易受到路径遍历攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
automateyournetwork MCPyATS 0.1.0 cpe:2.3:a:automateyournetwork:mcpyats:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19338

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III. Intelligence Information for CVE-2026-19338

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Vendor Advisories for CVE-2026-19338 (1)

Proof of Concept for CVE-2026-19338 (1)

Other References for CVE-2026-19338 (2)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-19338

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