---
id: CVE-2018-12122
title: >-
  Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0:
  Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service
  (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and
  associated …
summary: >-
  Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0:
  Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service
  (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and
  associated …
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-400
vendor: nodejs
product: node.js
affected:
  - 'node.js >= 6.0.0, < 6.15.1'
  - 'node.js >= 8.0.0, < 8.14.0'
  - 'node.js >= 10.0.0, < 10.14.0'
  - 'node.js >= 11.0.0, < 11.3.0'
  - suse_enterprise_storage = 4
  - suse_linux_enterprise_server = 12
  - suse_linux_enterprise_server = 15
  - suse_openstack_cloud = 7
  - suse_openstack_cloud = 8
patched:
  - node.js 11.3.0
published: '2018-11-28'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T22:16:45.057'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2018-12122'
references:
  - url: 'http://www.securityfocus.com/bid/106043'
    label: cve-request@iojs.org
  - url: 'https://access.redhat.com/errata/RHSA-2019:1821'
    label: cve-request@iojs.org
  - url: 'https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/'
    label: cve-request@iojs.org
  - url: 'https://security.gentoo.org/glsa/202003-48'
    label: cve-request@iojs.org
  - url: 'http://www.securityfocus.com/bid/106043'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://access.redhat.com/errata/RHSA-2019:1821'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.gentoo.org/glsa/202003-48'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20241213-0009/'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.41288
epssPercentile: 0.98638
ingestedAt: '2026-10-08T23:16:47.295Z'
---

## Overview

Node.js: All versions prior to Node.js 6.15.0, 8.14.0, 10.14.0 and 11.3.0: Slowloris HTTP Denial of Service: An attacker can cause a Denial of Service (DoS) by sending headers very slowly keeping HTTP or HTTPS connections and associated resources alive for a long period of time.

## Affected

- `node.js >= 6.0.0, < 6.15.1`
- `node.js >= 8.0.0, < 8.14.0`
- `node.js >= 10.0.0, < 10.14.0`
- `node.js >= 11.0.0, < 11.3.0`
- `suse_enterprise_storage = 4`
- `suse_linux_enterprise_server = 12`
- `suse_linux_enterprise_server = 15`
- `suse_openstack_cloud = 7`
- `suse_openstack_cloud = 8`

## Remediation

Upgrade past the affected range:

- `node.js 11.3.0`