Vulnerability · Published Aug 9, 2026 · Assigned by VulDB
CVE-2026-19338automateyournetwork MCPyATS generate_mermaid_markdown index.ts processGenerateRequest path traversal
Medium 5.3
In plain English
A medium-severity path traversal in MCPyATS from automateyournetwork. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.2%top 93.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| automateyournetwork | MCPyATS | 0.1.00.1.10.1.20.1.30.1.4 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-387174 | automateyournetwork MCPyATS generate_mermaid_markdown index.ts processGenerateRequest path traversal vdb-entry, technical-description
- VDB-387174 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-19338 | CVE Analysis and Report third-party-advisory
- Submit #865262 | automateyournetwork MCPyATS 0.1.4 Path Traversal third-party-advisory
- https://github.com/automateyournetwork/MCPyATS/issues/22 issue-tracking
- https://github.com/automateyournetwork/MCPyATS/ product