CVE-2025-59465

High

Description

A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by triggering an unhandled `TLSSocket` error `ECONNRESET`. Instead of safely closing the connection, the process crashes, enabling a remote denial of service. This primarily affects applications that do not attach explicit error handlers to secure sockets, for example: ``` server.on('secureConnection', socket => { socket.on('error', err => { console.log(err) }) }) ```

SeverityHigh

CVSS7.5

Exploit probability90. percentile4%

Product

Nodejs Node.js

PublishedJan 20, 2026

First seenJan 20, 2026

Weakness typeCWE-400Uncontrolled resource consumption CWE-248CWE-248

How to fix

Update

nodejs node.js20.20.0, 22.22.0, 24.13.0, 25.3.0 or later

Vendor advisories

Affected products

Product	Affected versions	Fixed in
nodejs node.js	20.0.0 ≤ v < 20.20.0, 22.0.0 ≤ v < 22.22.0, 24.0.0 ≤ v < 24.13.0, 25.0.0 ≤ v < 25.3.0	20.20.0, 22.22.0, 24.13.0, 25.3.0

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