CVE-2025-54881: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mermaid-js mermaid
Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 10.9.0-rc.1 to 11.9.0, user supplied input for sequence diagram labels is passed to innerHTML during calculation of element size, causing XSS.
CVE-2025-54881: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mermaid-js mermaid
Description
Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a renderer to create and modify complex diagrams. In the default configuration of mermaid 10.9.0-rc.1 to 11.9.0, user supplied input for sequence diagram labels is passed to innerHTML during calculation of element size, causing XSS.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2025-07-31T17:23:33.475Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 68a4b1bfad5a09ad00f9671f
Added to database: 8/19/2025, 5:17:51 PM
Last updated: 8/19/2025, 5:17:51 PM
Views: 1
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