CVE-2021-35513: Mermaid Project Mermaid

Medium severity, CVSS 6.1. EPSS: 1% chance of exploitation in the next 30 days.

Mermaid before 8.11.0 allows XSS when the antiscript feature is used.

Affected products

• Mermaid Project Mermaid: before 8.11.0 (fixed in 8.11.0)

Published 2021-06-27. Last modified 2026-06-17.