CVE-2026-41150

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.

• CWE-835

• https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6Patch
• https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30ePatch
• https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0Release Notes
• https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6Release Notes
• https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxhThird Party Advisory
• https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxhThird Party Advisory

Published

May 29, 2026

Last Modified

Jul 21, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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