CVE-2025-59466

State: Published
Severity: 5.9 Medium
Published: Jan 20, 2026
Updated: Jan 21, 2026
Reserved: Sep 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.0	5.9 Medium	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H	hackerone

Weaknesses

CWE-248 Uncaught Exception

Affected Products

Product	Versions
nodenodejs	20.19.6 through 20.19.6Affected 22.21.1 through 22.21.1Affected 24.12.0 through 24.12.0Affected 25.2.1 through 25.2.1Affected 8.0 to before 8.Affected 9.0 to before 9.Affected 10.0 to before 10.Affected 11.0 to before 11.Affected 12.0 to before 12.Affected 13.0 to before 13.Affected 14.0 to before 14.Affected 15.0 to before 15.Affected 16.0 to before 16.Affected 17.0 to before 17.Affected 18.0 to before 18.*Affected

Product

Versions

nodenodejs

20.19.6 through 20.19.6Affected
22.21.1 through 22.21.1Affected
24.12.0 through 24.12.0Affected
25.2.1 through 25.2.1Affected
8.0 to before 8.*Affected
9.0 to before 9.*Affected
10.0 to before 10.*Affected
11.0 to before 11.*Affected
12.0 to before 12.*Affected
13.0 to before 13.*Affected
14.0 to before 14.*Affected
15.0 to before 15.*Affected
16.0 to before 16.*Affected
17.0 to before 17.*Affected
18.0 to before 18.*Affected

References

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

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