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    CVE-2026-71439

    Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 11.6.0 until 11.16.1, Mermaid Radar Diagrams allow arbitrary large values for the ticks parameter, which can cause high CPU usage and freeze the rendering webpage or JavaScript process for long periods of time, potentially until the process is killed from memory exhaustion. This issue is fixed in version 11.16.1.

    Published:Aug 6, 2026
    Last Modified:Aug 7, 2026
    EPS:Aug 6, 2026
    EPSS Score:0.00391
    CVSS Score:5.3

    Affected Products

    Vendor
    Mermaid Project
    Product
    Mermaid

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-25 Forced Deadlock

    Related CVEs

    CVE-2026-71438 (CVSS 2.4) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior …
    CVE-2026-50159 (CVSS 5.3) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior …
    CVE-2026-71437 (CVSS 6.5) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From v…
    CVE-2026-71436 (CVSS 5.3) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From v…
    CVE-2026-41150 (CVSS 5.3) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior …
    CVE-2026-41159 (CVSS 5.3) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior …
    CVE-2026-41149 (CVSS 5.3) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versio…
    CVE-2026-41148 (CVSS 5.3) — Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Versio…
    CVE-2025-54880 (CVSS 5.1) — Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a…
    CVE-2022-31108 (CVSS 4.1) — Mermaid is a JavaScript based diagramming and charting tool that uses Markdown-inspired text definitions and a…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High