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CVE-2026-71437

Published Aug 6, 2026 CWE-1321

Overview

CVE-2026-71437 is a known-severity vulnerability. It was published on August 6, 2026.

Technical Description

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.5.0 until 11.16.1, Mermaid Architecture Diagrams are vulnerable to prototype pollution when a diagram defines a group with an id of __proto__. Because the group id is used directly as an object property key without validation, an attacker who can supply diagram text can pollute Object.prototype, potentially affecting the behavior of the embedding application. This issue is fixed in version 11.16.1.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/mermaid-js/mermaid/commit/99af3fc35ef0a9a9c8c6314521344d67523ddccf GitHub github.com/mermaid-js/mermaid/pull/8022 GitHub github.com/mermaid-js/mermaid/releases/tag/[email protected] GitHub github.com/mermaid-js/mermaid/security/advisories/GHSA-3rrr-jr9j-h3q3 GitHub github.com/mermaid-js/mermaid/security/advisories/GHSA-3rrr-jr9j-h3q3

Frequently Asked Questions

What is CVE-2026-71437?

CVE-2026-71437 is a known-severity vulnerability. It was published on August 6, 2026.

How severe is CVE-2026-71437?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-71437?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-71437?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-71437 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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