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Fencer Vulns
high 7.5

CVE-2019-5737 in the critical feed json

In Node.js including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1, an attacker can cause a Denial of…

published 2019-03-28 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15310

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
16.2%
EPSS 16.2% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

In Node.js including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1, an attacker can cause a Denial of Service (DoS) by establishing an HTTP or HTTPS connection in keep-alive mode and by sending headers very slowly. This keeps the connection and associated resources alive for a long period of time. Potential attacks are mitigated by the use of a load balancer or other proxy layer. This vulnerability is an extension of CVE-2018-12121, addressed in November and impacts all active Node.js release lines including 6.x before 6.17.0, 8.x before 8.15.1, 10.x before 10.15.2, and 11.x before 11.10.1.

Patch / fix

  • nodejs node.js 6.17.0, 8.15.1, 10.15.2, 11.10.1
  • nodejs Debian 14, Debian 13, Debian 12 10.15.2~dfsg-1

debian advisories DEBIAN-CVE-2019-5737

  • nodejs Ubuntu Pro 18.04 LTS 8.10.0~dfsg-2ubuntu0.4+esm1

ubuntu advisories UBUNTU-CVE-2019-5737

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • npm RHEL 8 1:6.9.0-1.10.16.3.2.module+el8.0.0+4214+49953fda
  • nodejs RHEL 8 1:10.16.3-2.module+el8.0.0+4214+49953fda
  • nodejs-nodemon RHEL 8 1.18.3-1.module+el8+2632+6c5111ed
  • nodejs-packaging RHEL 8 17-3.module+el8+2873+aa7dfd9a
  • rh-nodejs10-nodejs RHEL 3 SOFTWARE_COLLECTIONS 10.16.3-3.el7
  • rh-nodejs10 RHEL 3 SOFTWARE_COLLECTIONS 3.2-3.el7
  • rh-nodejs10-npm RHEL 3 SOFTWARE_COLLECTIONS 6.9.0-10.16.3.3.el7
  • rh-nodejs10-runtime RHEL 3 SOFTWARE_COLLECTIONS 3.2-3.el7

red hat advisories RHSA-2019:2925RHSA-2019:2939RHSA-2019:1821

  • nodejs6 SLE Module for Web and Scripting 12, OpenStack Cloud Crowbar 8, OpenStack Cloud 7 +1 more 6.17.0-11.24.1
  • nodejs4 SLE Module for Web and Scripting 12, Enterprise Storage 4 4.9.1-15.20.1
  • nodejs10 SLE Module for Web and Scripting 15, SLE Module for Web and Scripting 12 10.15.2-1.6.1
  • nodejs8 SLE Module for Web and Scripting 15 8.15.1-3.14.1
  • firefox-atk SLES 11 SP4-LTSS 2.26.1-2.8.4
  • mozilla-nss SLES 11 SP4-LTSS 3.45-38.9.3
  • firefox-gtk3 SLES 11 SP4-LTSS 3.10.9-2.15.3
  • mozilla-nspr SLES 11 SP4-LTSS 4.21-29.6.1

suse advisories SUSE-SU-2019:14246-1SUSE-SU-2019:0818-1SUSE-SU-2019:0658-1SUSE-SU-2019:0636-1SUSE-SU-2019:0635-1SUSE-SU-2019:0627-1

  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2023+d2377ea3
  • nodejs-nodemon AlmaLinux 8 1.18.3-1.module_el8.3.0+2047+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2224+b07ac28e
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.4.0+2521+c668cc9f
  • nodejs-packaging AlmaLinux 8 17-3.module_el8.3.0+2023+d2377ea3

almalinux advisories ALSA-2019:2925

  • nodejs-nodemon Rocky Linux 8 1.18.3-1.module+el8.3.0+101+f84c7154
  • nodejs-packaging Rocky Linux 8 17-3.module+el8.3.0+101+f84c7154

rocky linux advisories RLSA-2019:2925

  • nodejs Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 10.15.3-r0
  • nodejs-current Alpine 3.24, Alpine 3.23, Alpine 3.22 +12 more 11.10.1-r0

alpine advisories ALPINE-CVE-2019-5737

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2019-5737 updated cvss 5.3

nodejs: Insufficient Slowloris fix causing DoS via server.headersTimeout bypass

  • Red Hat OpenShift Container Platform 3.6 nodejs
    affected: workaround, no fix available “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.”
  • Red Hat OpenShift Container Platform 3.7 nodejs
    affected: workaround, no fix planned “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.”
  • Red Hat OpenShift Container Platform 3.9 nodejs Red Hat OpenShift Container Platform 3.10 nodejs
    affected: workaround, no fix available “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.”
  • Red Hat Enterprise Linux AppStream (v. 8) nodejs 10.16.3-2.module+el8.0.0+4214+49953fda, nodejs-packaging 17-3.module+el8+2873+aa7dfd9a, nodejs-nodemon 1.18.3-1.module+el8+2632+6c5111ed, npm 6.9.0-1.10.16.3.2.module+el8.0.0+4214+49953fda
    fixed: vendor fix “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.” RHSA-2019:2925
  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more
    fixed: vendor fix “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.” RHSA-2019:2939
  • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7
    fixed: vendor fix “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.” RHSA-2019:1821
  • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs10-npm 6.9.0-10.16.3.3.el7 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-nodejs10 3.2-3.el7, rh-nodejs10-runtime 3.2-3.el7, rh-nodejs10-scldevel 3.2-3.el7, rh-nodejs8-nodejs 8.16.0-1.el7, rh-nodejs10-nodejs 10.16.3-3.el7, rh-nodejs8-npm 6.4.1-8.16.0.1.el7, +1 more
    fixed: vendor fix “The use of a Load Balancer or a Reverse Proxy will increase the difficulty of the attack.” RHSA-2019:2939
  • Red Hat OpenShift Application Runtimes nodejs8 nodejs8, nodejs10 nodejs10
    not affected: vulnerable code not present

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

Exploit prediction

16.18% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • Node.js Node.js

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-770 Allocation of Resources Without Limits or Throttling
Technology feeds

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.