What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-09 · updated 2026-10-23
• Weakness: CWE-22

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.

Affected products

• automateyournetwork MCPyATS: 0.1.0, 0.1.1, 0.1.2, 0.1.3, 0.1.4

References

• https://github.com/automateyournetwork/MCPyATS/
• https://github.com/automateyournetwork/MCPyATS/issues/22
• https://vuldb.com/cve/CVE-2026-19338
• https://vuldb.com/submit/865262
• https://vuldb.com/vuln/387174
• https://vuldb.com/vuln/387174/cti

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