~ / search / GHSA-6m6c-36f7-fhxh

GHSA-6m6c-36f7-fhxh

Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-41150

Packages

EcosystemPackageAffectedFixed in
npm mermaid >= 11.0.0-alpha.1, < 11.15.0 11.15.0
npm mermaid < 10.9.6 10.9.6

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact Mermaid v11.14.0 and earlier are vulnerable to a denial-of-service attack when rendering gantt charts, if they use the [`excludes` attribute](https://mermaid.js.org/syntax/gantt.html?#excludes) to exclude all dates. Example: ``` gantt excludes monday,tuesday,wednesday,thursday,friday,saturday,sunday DoS :2025-01-01, 1d ``` `mermaid.parse` is unaffected, unless you then call the `ganttDb.getTasks()` (which is called when rendering a diagram). ### Patches This has been patched in: - [v11.15.0](https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0) (see [faafb5d49106dd32c367f3882505f2dd625aa30e](https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30e)) - [v10.9.6](https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6) (see [a59ea56174712ee5430dfd5bc877cb5151f501a6](https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6)) ### Workarounds There are no workarounds available without updating to a newer version of mermaid.

References

External links from the advisory. They lead to third-party sites.