What’s Vulnerable › Vulnerabilities

CVE-2021-35513

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-27 · updated 2026-06-17
• Weakness: CWE-79

Description

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

Affected products

• mermaid-js mermaid: before 8.11.0 — fixed in 8.11.0

How to fix

Upgrade to a fixed version: mermaid-js mermaid 8.11.0. Check the vendor advisory for mitigations.

References

• https://github.com/mermaid-js/mermaid/issues/2122
• https://github.com/mermaid-js/mermaid/pull/2123
• https://github.com/mermaid-js/mermaid/releases/tag/8.11.0-rc2
• https://github.com/mermaid-js/mermaid/issues/2122
• https://github.com/mermaid-js/mermaid/pull/2123
• https://github.com/mermaid-js/mermaid/releases/tag/8.11.0-rc2

Get alerted when CVE-2021-35513 or the next vulnerability affects your stack