medium5.3
CVE-2026-41150
Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | mermaid | >= 11.0.0-alpha.1, <= 11.14.0 | 11.15.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mermaid Project | Mermaid | before 10.9.6 from 11.0.0 before 11.15.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-6m6c-36f7-fhxh
- https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxh
- https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6
- https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30e
- https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0
- https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6
- https://nvd.nist.gov/vuln/detail/CVE-2026-41150