CVE-2025-59466

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.

Score

CVSS 3.1 7.5 High

Status

Analyzed - support@hackerone.com

Published

2026-01-20

Last modified

2026-01-21

Weaknesses

CWE-248

Affected products

• Node (Nodejs)
• Node.js (Nodejs)

References

• https://nodejs.org/en/blog/vulnerability/december-2025-security-releases