CVE-2026-41150 MEDIUM

CVE-2026-41150: Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS

Vendor Mermaid-Js
Product mermaid
Weakness CWE-835
Published May 29, 2026
Last update May 29, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

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

What the vulnerability does

01Description

Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. Prior to 10.9.6 and 11.15.0, there is a denial-of-service attack when rendering gantt charts, if they use the excludes attribute to exclude all dates. mermaid.parse is unaffected, unless you then call the ganttDb.getTasks() (which is called when rendering a diagram). This vulnerability is fixed in 10.9.6 and 11.15.0.

Key dates

02Disclosure timeline

May 29, 2026 CVE published
May 29, 2026 Record updated