Vulnerability Description
We have identified a bug in Node.js error handling where "Maximum call stack size exceeded" errors become uncatchable when `async_hooks.createHook()` is enabled. Instead of reaching `process.on('uncaughtException')`, the process terminates, making the crash unrecoverable. Applications that rely on `AsyncLocalStorage` (v22, v20) or `async_hooks.createHook()` (v24, v22, v20) become vulnerable to denial-of-service crashes triggered by deep recursion under specific conditions.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nodejs | Node.Js | >= 20.0.0, < 20.20.0 |
Related Weaknesses (CWE)
References
- https://nodejs.org/en/blog/vulnerability/december-2025-security-releasesRelease NotesVendor Advisory
FAQ
What is CVE-2025-59466?
CVE-2025-59466 is a vulnerability with a CVSS score of 7.5 (HIGH). We have identified a bug in Node.js error handling where "Maximum call stack size exceeded" errors become uncatchable when `async_hooks.createHook()` is enabled. Instead of reaching `process.on('uncau...
How severe is CVE-2025-59466?
CVE-2025-59466 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-59466?
Check the references section above for vendor advisories and patch information. Affected products include: Nodejs Node.Js.