What is CVE-2025-59466?

CVE-2025-59466 is a high-severity vulnerability in Nodejs Node, classified under CWE-248. CVSS score: 7.5/10. Published 2026-01-20.

How severe is CVE-2025-59466?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Nodejs Node

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.

EPSS: 0.006 (46.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nodejs Node — versions 20.19.6, 22.21.1, 24.12.0
Nodejs Node.js

Weakness classification (CWE)

CWE-248

References

support@hackerone.com (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2025-59466?: CVE-2025-59466 is a high-severity vulnerability in Nodejs Node, classified under CWE-248. CVSS score: 7.5/10. Published 2026-01-20.
How severe is CVE-2025-59466?: High severity. CVSS v3 base score is 7.5 out of 10.