{"id":"CVE-2026-41150","aliases":["GHSA-6m6c-36f7-fhxh"],"url":"https://o3.security/vulnerability/CVE-2026-41150","summary":"Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS","details":"### Impact\n\nMermaid 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.\n\nExample:\n\n```\ngantt\n  excludes monday,tuesday,wednesday,thursday,friday,saturday,sunday\n  DoS :2025-01-01, 1d\n```\n\n`mermaid.parse` is unaffected, unless you then call the `ganttDb.getTasks()` (which is called when rendering a diagram).\n\n### Patches\n\nThis has been patched in:\n\n- [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))\n- [v10.9.6](https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6) (see [a59ea56174712ee5430dfd5bc877cb5151f501a6](https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6))\n\n### Workarounds\n\nThere are no workarounds available without updating to a newer version of mermaid.","published":"2026-05-29T13:54:52.157Z","modified":"2026-08-12T03:51:40.759567279Z","cvss":null,"epss":{"score":0.00384,"percentile":0.32167,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"mermaid","fixedVersion":"11.15.0"},{"ecosystem":"npm","name":"mermaid","fixedVersion":"10.9.6"}],"fix":{"url":"https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6","label":"mermaid-js/mermaid@a59ea56"},"references":[{"type":"WEB","url":"https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0"},{"type":"WEB","url":"https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41150.json"},{"type":"ADVISORY","url":"https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41150"},{"type":"FIX","url":"https://github.com/mermaid-js/mermaid/commit/a59ea56174712ee5430dfd5bc877cb5151f501a6"},{"type":"FIX","url":"https://github.com/mermaid-js/mermaid/commit/faafb5d49106dd32c367f3882505f2dd625aa30e"},{"type":"PACKAGE","url":"https://github.com/mermaid-js/mermaid"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:40.759567279Z"}}