CVE-2026-71439
Published:August 06, 2026
Updated:August 19, 2026
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.
Affected Packages
mermaid (CDN_JS):
Affected version(s) >=11.6.0 <11.16.1Fix Suggestion:
Update to version 11.16.1https://github.com/mermaid-js/mermaid.git (GITHUB):
Affected version(s) >=mermaid@11.6.0 <mermaid@11.16.1Fix Suggestion:
Update to version mermaid@11.16.1mermaid (NPM):
Affected version(s) >=11.6.0 <11.16.1Fix Suggestion:
Update to version 11.16.1Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
4.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
EPSS
Base Score:
0.39