Answer in brief
CVE-2026-71439 records a Medium severity (CVSS 5.3) vulnerability in Mermaid radar diagrams are vulnerable to DoS. The current sources do not mark it as known exploited. The current feed maps mermaid-js/mermaid (generic), mermaid (npm). 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 mermaid-js/mermaid (generic), mermaid (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| mermaid-js/mermaidgeneric | >= 11.6.0, < 11.16.1 | Not reported |
| mermaidnpm | >=11.6.0,<11.16.1 | 11.16.1 |
Published upstream
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 6, 2026
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.6.0 until 11.16.1, Mermaid Radar Diagrams allow arbitrary large values for the ticks parameter, which can cause high CPU usage and freeze the rendering webpage or JavaScript process for long periods of time, potentially until the process is killed from memory exhaustion. This issue is fixed in version 11.16.1.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-71439 records a Medium severity (CVSS 5.3) vulnerability in Mermaid radar diagrams are vulnerable to DoS. The current sources do not mark it as known exploited. The current feed maps mermaid-js/mermaid (generic), mermaid (npm). 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 mermaid-js/mermaid (generic), mermaid (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| mermaid-js/mermaidgeneric | >= 11.6.0, < 11.16.1 | Not reported |
| mermaidnpm | >=11.6.0,<11.16.1 | 11.16.1 |
Published upstream
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 6, 2026
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.6.0 until 11.16.1, Mermaid Radar Diagrams allow arbitrary large values for the ticks parameter, which can cause high CPU usage and freeze the rendering webpage or JavaScript process for long periods of time, potentially until the process is killed from memory exhaustion. This issue is fixed in version 11.16.1.
Quoted source text, attributed separately from HOL analysis.