Skip to content
Fencer Vulns
high 7.5

CVE-2024-37890 json

Denial of service when handling a request with many HTTP headers in ws

published 2024-06-17 2 y ago modified 2026-09-10 1 mo ago also EUVD-2024-1899 , GHSA-3h5v-q93c-6h6q

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

ws is an open source WebSocket client and server for Node.js. A request with a number of headers exceeding theserver.maxHeadersCount threshold could be used to crash a ws server. The vulnerability was fixed in ws@8.17.1 (e55e510) and backported to ws@7.5.10 (22c2876), ws@6.2.3 (eeb76d3), and ws@5.2.4 (4abd8f6). In vulnerable versions of ws, the issue can be mitigated in the following ways: 1. Reduce the maximum allowed length of the request headers using the --max-http-header-size=size and/or the maxHeaderSize options so that no more headers than the server.maxHeadersCount limit can be sent. 2. Set server.maxHeadersCount to 0 so that no limit is applied.

Patch / fix

  • npm ws 5.2.4, 6.2.3, 7.5.10, 8.17.1
  • websockets ws 5.2.4, 6.2.3, 7.5.10, 8.17.1
  • node-ws Debian 14, Debian 13 8.18.0+~cs13.7.11-1

debian advisories DEBIAN-CVE-2024-37890

  • dotnet8.0 RHEL 10.0 8.0.113-2.el10_0
  • dotnet-sdk-8.0 RHEL 10.0 8.0.113-2.el10_0
  • dotnet-hostfxr-8.0 RHEL 10.0 8.0.13-2.el10_0
  • dotnet-runtime-8.0 RHEL 10.0 8.0.13-2.el10_0
  • dotnet-sdk-dbg-8.0 RHEL 10.0 8.0.113-2.el10_0
  • dotnet-templates-8.0 RHEL 10.0 8.0.113-2.el10_0
  • aspnetcore-runtime-8.0 RHEL 10.0 8.0.13-2.el10_0
  • dotnet-runtime-dbg-8.0 RHEL 10.0 8.0.13-2.el10_0

red hat advisories RHBA-2025:4932RHBA-2024:9550RHBA-2024:9549

  • reaper CBL-Mariner 2.0 3.1.1-10

azure linux advisories AZL-42808

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-37890 updated cvss 5.9

nodejs-ws: denial of service when handling a request with many HTTP headers

  • Red Hat .NET 6.0 on Red Hat Enterprise Linux rh-dotnet60-dotnet, rh-dotnet60-dotnet-host, rh-dotnet60-dotnet-sdk-6.0, rh-dotnet60-dotnet-hostfxr-6.0, rh-dotnet60-dotnet-runtime-6.0, rh-dotnet60-dotnet-templates-6.0, +6 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Migration Toolkit for Applications 6 nodejs-ws
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Migration Toolkit for Applications 7 mta/mta-cli-rhel9
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Migration Toolkit for Runtimes nodejs-ws Red Hat OpenShift Serverless nodejs-ws nodejs-ws
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-25/lightspeed-rhel8
    affected: workaround, no fix available
  • Red Hat Ceph Storage 6 thrift
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ceph Storage 7 thrift
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 7 dotnet6.0
    affected: workaround, no fix planned “Out of support scope”
show 14 more
  • Red Hat Enterprise Linux 9 librbd1, dotnet7.0, librados2, dotnet-host, dotnet-sdk-7.0, dotnet-hostfxr-7.0, +8 more
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 openshift4/ose-console Red Hat Openshift Container Storage 4 ocs4/mcg-core-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Openshift Data Foundation 4 odf4/odf-console-rhel9
    affected: workaround, no fix available
  • Red Hat OpenShift Dev Spaces devspaces/code-rhel8, devspaces/dashboard-rhel8 Red Hat OpenShift GitOps openshift-gitops-1/gitops-operator-bundle Red Hat Quay 3 quay/quay-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ceph Storage 7.1 rhceph/rhceph-7-rhel9 1791452477
    fixed: vendor fix RHSA-2026:83548
  • Red Hat CodeReady Linux Builder (v. 9) dotnet-sdk-6.0-source-built-artifacts 6.0.135-2.el9_5, dotnet-sdk-8.0-source-built-artifacts 8.0.110-3.el9_5
    fixed: vendor fix RHBA-2024:9550
  • Red Hat Developer Hub 1.3 for RHEL 9 rhdh/rhdh-hub-rhel9 1.3-124
    fixed: vendor fix RHBA-2024:9054
  • Red Hat Enterprise Linux AppStream (v. 9) dotnet6.0 6.0.135-2.el9_5, dotnet8.0 8.0.110-3.el9_5, dotnet-sdk-6.0 6.0.135-2.el9_5, dotnet-sdk-8.0 8.0.110-3.el9_5, dotnet-hostfxr-6.0 6.0.35-2.el9_5, dotnet-hostfxr-8.0 8.0.10-3.el9_5, +15 more
    fixed: vendor fix RHBA-2024:9550
  • Red Hat Enterprise Linux AppStream (v. 10) dotnet8.0 8.0.113-2.el10_0, dotnet-sdk-8.0 8.0.113-2.el10_0, dotnet-hostfxr-8.0 8.0.13-2.el10_0, dotnet-runtime-8.0 8.0.13-2.el10_0, dotnet-sdk-dbg-8.0 8.0.113-2.el10_0, dotnet-templates-8.0 8.0.113-2.el10_0, +6 more Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) dotnet-sdk-8.0-source-built-artifacts 8.0.113-2.el10_0
    fixed: vendor fix RHBA-2025:4932
  • Red Hat OpenShift Pipelines 1.15 openshift-pipelines 1772036471
    fixed: vendor fix RHSA-2026:3710
  • Red Hat RHODF 4.14 for RHEL 9 odf4/odf-console-rhel9 v4.14.18-3
    fixed: vendor fix RHSA-2025:8551
  • Red Hat RHODF 4.15 for RHEL 9 odf4/odf-console-rhel9 v4.15.14-2
    fixed: vendor fix RHSA-2025:8544
  • Red Hat RHODF 4.16 for RHEL 9 odf4/mcg-core-rhel9 v4.16.1-2, odf4/mcg-core-rhel9 v4.16.0-60, odf4/odf-console-rhel9 v4.16.2-2
    fixed: vendor fix RHSA-2024:4591
  • Red Hat Cryostat 2 nodejs-ws nodejs-ws Red Hat Multicluster Engine for Kubernetes multicluster-engine/multicluster-engine-console-mce-rhel9 Red Hat 3scale API Management Platform 2 3scale-system 3scale-system Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel8 Red Hat Ansible Automation Platform 2 automation-controller, automation-eda-controller Red Hat build of Apache Camel - HawtIO 4 nodejs-ws nodejs-ws
    +8 more products
    Red Hat build of Apicurio Registry 2 nodejs-ws nodejs-ws Red Hat Build of Keycloak nodejs-ws nodejs-ws Red Hat build of OptaPlanner 8 nodejs-ws nodejs-ws Red Hat Ceph Storage 5 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mds, +33 more Red Hat Ceph Storage 7.1 rhceph/grafana-rhel9 1791450715, rhceph/keepalived-rhel9 1791453133, rhceph/snmp-notifier-rhel9 1791450035, rhceph/rhceph-haproxy-rhel9 1791452229, rhceph/rhceph-promtail-rhel9 1791451373 Red Hat Data Grid 8 nodejs-ws nodejs-ws Red Hat Developer Hub 1.3 for RHEL 9 rhdh/rhdh-rhel9-operator 1.3-119, rhdh/rhdh-operator-bundle 1.3-118 Red Hat Discovery 1 discovery-server-container
    not affected: vulnerable code not present

10 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
npm ws
>=2.1.0, <5.2.4
>=6.0.0, <6.2.3
>=7.0.0, <7.5.10
>=8.0.0, <8.17.1
5.2.4
6.2.3
7.5.10
8.17.1

Affected products

  • websockets ws

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.