GHSA-6m6c-36f7-fhxh

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GHSA-6m6c-36f7-fhxh

Summary: Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS

Details: ### 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: https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxh, https://nvd.nist.gov/vuln/detail/CVE-2026-41150, https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6, https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30e, https://github.com/mermaid-js/mermaid, https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0, https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6