CVE-2026-71439

MEDIUM

Mermaid < 11.16.1 Radar Diagrams - Denial of Service via Large Ticks

Title source: manual
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v4 5.3
EPSS 0.0039
EPSS Percentile 31.9%
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-1322 CWE-606
Status published
Products (2)
mermaid-js/mermaid >= 11.6.0, < 11.16.1
npm/mermaid 11.6.0 - 11.16.1npm
Published Aug 06, 2026
Tracked Since Aug 07, 2026