{
"id": "GHSA-rhh3-jpg6-66xh",
"aliases": [
"CVE-2026-71439"
],
"details": "### Impact\n\nMermaid radar diagrams allow arbitrary large values for `ticks`, which can cause high CPU usage, freezing the webpage/JavaScript process for long periods of time, until the process is eventually killed due to OOM/running out of memory.\n\n#### Proof-of-concept\n\n```txt\nradar-beta\n axis a, b\n curve c {1, 1}\n ticks 1000000000\n```\n\n### Patches\n\n_Has the problem been patched? What versions should users upgrade to?_\n\nThis problem has been patched by https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679e607e, which was released in [Mermaid v11.16.1](https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1)\n\n### Workarounds\n\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThere are no known workarounds without updating to a patched version of mermaid.\n\n### References\n\n_Are there any links users can visit to find out more?_\n\n- https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679e607e\n- https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1",
"summary": "Mermaid radar diagrams are vulnerable to DoS",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "11.6.0"
},
{
"fixed": "11.16.1"
}
]
}
],
"package": {
"name": "mermaid",
"ecosystem": "npm"
}
}
],
"modified": "2026-08-06T20:01:07Z",
"severity": [
{
"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"
}
],
"published": "2026-08-06T20:01:07Z",
"references": [
{
"url": "https://github.com/mermaid-js/mermaid/security/advisories/GHSA-rhh3-jpg6-66xh",
"type": "WEB"
},
{
"url": "https://github.com/mermaid-js/mermaid/pull/8022",
"type": "WEB"
},
{
"url": "https://github.com/mermaid-js/mermaid/commit/59b22fad2b3bb04f87a476c84a8a2b24679e607e",
"type": "WEB"
},
{
"url": "https://github.com/mermaid-js/mermaid",
"type": "PACKAGE"
},
{
"url": "https://github.com/mermaid-js/mermaid/releases/tag/mermaid%4011.16.1",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-1322",
"CWE-606"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-08-06T20:01:07Z"
}
}