Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/mermaid-js/mermaid/commit/5c69e5fdb004a6d0a2abe97e23d26e223a0
- https://github.com/mermaid-js/mermaid/commit/685516a85ec1df64cefd4fd15f26533be87
- https://github.com/mermaid-js/mermaid/security/advisories/GHSA-7rqq-prvp-x9jh
FAQ
What is CVE-2025-54881?
CVE-2025-54881 is a documented vulnerability. 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 1...
How severe is CVE-2025-54881?
CVSS scoring is not yet available for CVE-2025-54881. Check NVD for updates.
Is there a patch for CVE-2025-54881?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.