Vulnerability Description
Next AI Draw.io is a next.js web application that integrates AI capabilities with draw.io diagrams. Prior to 0.4.15, the embedded HTTP sidecar contains three POST handlers (/api/state, /api/restore, and /api/history-svg) that process incoming requests by accumulating the entire request body into a JavaScript string without any size limitations. Node.js buffers the entire payload in the V8 heap. Sending a sufficiently large body (e.g., 500 MiB or more) will exhaust the process heap memory, leading to an Out-of-Memory (OOM) error that crashes the MCP server. This vulnerability is fixed in 0.4.15.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Dayuanjiang | Next Ai Draw.Io | < 0.4.15 |
Related Weaknesses (CWE)
References
- https://github.com/DayuanJiang/next-ai-draw-io/commit/31819f413cc4b329a1cb81e5fcPatch
- https://github.com/DayuanJiang/next-ai-draw-io/security/advisories/GHSA-9q7h-wgfExploitMitigationVendor Advisory
- https://github.com/DayuanJiang/next-ai-draw-io/security/advisories/GHSA-9q7h-wgfExploitMitigationVendor Advisory
FAQ
What is CVE-2026-40608?
CVE-2026-40608 is a vulnerability with a CVSS score of 6.2 (MEDIUM). Next AI Draw.io is a next.js web application that integrates AI capabilities with draw.io diagrams. Prior to 0.4.15, the embedded HTTP sidecar contains three POST handlers (/api/state, /api/restore, a...
How severe is CVE-2026-40608?
CVE-2026-40608 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40608?
Check the references section above for vendor advisories and patch information. Affected products include: Dayuanjiang Next Ai Draw.Io.