Medium
Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-41150
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 02:00 UTC · Revision 1
Source evidence
Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS
core-osv · Original sourcePublished 29 May 2026, 13:54 UTC
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.
osv:CVE-2026-41150
Complete source record
{
"id": "dbf6227b98bc242a91cc792896f7229fb2dbdec639889df63b9abd81d8b3f0d1",
"url": "https://osv.dev/vulnerability/CVE-2026-41150",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Mermaid Gantt Charts are vulnerable to an Infinite Loop DoS",
"summary": "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.",
"evidence": "osv:CVE-2026-41150",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-41150",
"aliases": [
"CVE-2026-41150",
"GHSA-6m6c-36f7-fhxh"
],
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{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L"
}
],
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],
"modified": "2026-10-28T02:30:46.184204427Z",
"provider": "osv",
"references": [
"https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.15.0",
"https://github.com/mermaid-js/mermaid/releases/tag/v10.9.6",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41150.json",
"https://github.com/mermaid-js/mermaid/security/advisories/GHSA-6m6c-36f7-fhxh",
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],
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"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 514084,
"published_at": "2026-05-29T13:54:52.157+00:00"
}