CVE-2026-41150

MediumCVSS 5.3/10Last modified Jul 21, 2026

Description

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-835

Affected software

Vendor	Product	Versions
mermaid-js	mermaid	>= 11.0.0-alpha.1, < 11.15.0; < 10.9.6

References

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

Timeline

Published: May 29, 2026
Last modified: Jul 21, 2026
NVD status: Analyzed

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