AUGUST 16, 2026
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Case File

CVE-2026-71439

MEDIUM · CVSS 5.3 EPSS 0.39% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-06 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

Mermaid versions 11.6.0 to 11.16.1 are vulnerable due to the ability to input arbitrary large values for the ticks parameter in Radar Diagrams, leading to excessive CPU usage and potential freezing of the rendering webpage or JavaScript process. This vulnerability can result in significant performance degradation, potentially causing memory exhaustion. Developers and organizations utilizing affected versions of Mermaid should prioritize upgrading to version 11.16.1 to mitigate these risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-71439
Severity
MEDIUM
CVSS
5.3
EPSS
0.39%
Java

Original NVD Description

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.