---
id: CVE-2025-59465
title: >-
  A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can
  cause Node.js to crash by triggering an unhandled `TLSSocket` error
  `ECONNRESET`
summary: >-
  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 remot…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
  - CWE-248
vendor: nodejs
product: node.js
affected:
  - 'node.js >= 20.0.0, < 20.20.0'
  - 'node.js >= 22.0.0, < 22.22.0'
  - 'node.js >= 24.0.0, < 24.13.0'
  - 'node.js >= 25.0.0, < 25.3.0'
patched:
  - node.js 25.3.0
published: '2026-01-20'
updated: '2026-06-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-59465'
references:
  - url: 'https://nodejs.org/en/blog/vulnerability/december-2025-security-releases'
    label: support@hackerone.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:1842'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:1843'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2420'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2421'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2422'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2767'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2768'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2781'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2782'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2783'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2864'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:2899'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:6402'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:6431'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:7386'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:7387'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2025-59465'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2431349'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-59465.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.04021
epssPercentile: 0.90203
ingestedAt: '2026-06-30T13:26:50.524Z'
---

## Overview

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)
  })
})
```

## Affected

- `node.js >= 20.0.0, < 20.20.0`
- `node.js >= 22.0.0, < 22.22.0`
- `node.js >= 24.0.0, < 24.13.0`
- `node.js >= 25.0.0, < 25.3.0`

## Remediation

Upgrade past the affected range:

- `node.js 25.3.0`