CVE-2026-71436Mermaid XY Charts are vulnerable to an infinite loop DoS
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Mermaid is a JavaScript tool that uses Markdown-inspired text to create and modify diagrams and charts. From version 10.6.0 until 10.9.8 and 11.16.1, Mermaid XY Charts are vulnerable to an infinite loop denial of service in the setXAxisRangeData function when configuring an X-Axis with invalid parameters. Because each loop iteration appends an element to an array, this generally causes a RangeError to appear after a few seconds, but it may instead cause the page or JavaScript process to crash from memory exhaustion, depending on the environment. This issue is fixed in versions 10.9.8 and 11.16.1.
- CVSS
- 5.3 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-835, CWE-1325
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Aug 7, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
mermaid-js mermaid mermaid_js:mermaid (from the name) | from 10.6.0, < 10.9.8; from 11.0.0-alpha.1, < 11.16.1 | CNA record |
References
- https://github.com/mermaid-js/mermaid/security/advisories/GHSA-2v8p-3f2j-5mp7x-refsource-confirm
- https://github.com/mermaid-js/mermaid/pull/8022x-refsource-misc
- https://github.com/mermaid-js/mermaid/commit/630aa7e5dd417e1f56bff2a1ce8df2c5ad08d289x-refsource-misc
- https://github.com/mermaid-js/mermaid/commit/ef60adc837d9d5107af21285f01e83dea309bd0ax-refsource-misc
- https://github.com/mermaid-js/mermaid/releases/tag/mermaid@11.16.1x-refsource-misc
- https://github.com/mermaid-js/mermaid/releases/tag/v10.9.8x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.