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CVE-2025-59466

Good to know:

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Date: January 20, 2026

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.

Severity Score

Related Resources (4)

https://nodejs.org/en/blog/vulnerability/december-2025-security-releases
https://nodejs.org/en/blog/vulnerability/december-2025-security-releases#timeout-based-race-conditions-make-uint8arraybufferalloc-non-zerofilled-cve-2025-55131---high
https://nvd.nist.gov/vuln/detail/CVE-2025-59466
https://www.mend.io/vulnerability-database/CVE-2025-59466

Severity Score

Weakness Type (CWE)

Uncaught Exception

CWE-248

Top Fix

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Upgrade Version

Upgrade to version https://github.com/nodejs/node.git - v20.20.0;https://github.com/nodejs/node.git - v22.22.0;https://github.com/nodejs/node.git - v24.13.0;https://github.com/nodejs/node.git - v25.3.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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