CVE-2025-59465

HIGH

Nodejs Node.js < 20.20.0 - Denial of Service

Title source: rule
STIX 2.1

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) }) }) ```

Scores

CVSS v3 7.5
EPSS 0.0008
EPSS Percentile 22.6%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-400
Status published
Products (1)
nodejs/node.js 20.0.0 - 20.20.0
Published Jan 20, 2026
Tracked Since Feb 18, 2026