Answer in brief
CVE-2026-19338 records a Medium severity (CVSS 5.3) vulnerability in automateyournetwork MCPyATS generate_mermaid_markdown index.ts processGenerateRequest path traversal. The current sources do not mark it as known exploited. The current feed maps automateyournetwork/MCPyATS (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps automateyournetwork/MCPyATS (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| automateyournetwork/MCPyATSgeneric | 0.1.0 || 0.1.1 || 0.1.2 || 0.1.3 || 0.1.4 | Not reported |
Published upstream
Aug 9, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 9, 2026
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.
Quoted source text, attributed separately from HOL analysis.