CVE-2019-5737

33

FAUCET Score

CVE-2019-5737 is a Denial of Service (DoS) vulnerability affecting Node.js versions 6.x, 8.x, 10.x, and 11.x, as well as related products like openSUSE. An attacker can exploit this by maintaining slow HTTP/HTTPS header transmissions in keep-alive mode, consuming server resources. With a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to high availability impact. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 6.0.0, < 6.17.0CPE matchmatch criteria	cpe:2.3:a:nodejs:node.js:::::lts:::*
		>= 8.0.0, < 8.15.1CPE matchmatch criteria	cpe:2.3:a:nodejs:node.js:::::lts:::*
		>= 10.0.0, < 10.15.2CPE matchmatch criteria	cpe:2.3:a:nodejs:node.js:::::lts:::*
		>= 11.0.0, < 11.10.1CPE matchmatch criteria	cpe:2.3:a:nodejs:node.js:::::-:::*
		42.3CPE matchmatch criteria	cpe:2.3:o:opensuse:leap:42.3:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

16.18%

Probability of exploitation in next 30 days

EPSS Percentile

96.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.1618 is in the 95th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (18)

microsoftpatch availablevia msrc

Product: 16918-16820Fixed in: 14.17.2-1

microsoftpatch availablevia msrc

Product: cm1 nodejs 14.17.2-1 on CBL Mariner 1.0Fixed in: 14.17.2-1

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs10-0:3.2-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs10-nodejs-0:10.16.3-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-nodejs8-nodejs-0:8.16.0-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-nodejs8-nodejs-0:8.16.0-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-nodejs10-0:3.2-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-nodejs10-nodejs-0:10.16.3-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs8-nodejs-0:8.16.0-1.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: nodejs:10-8000020190911085529.f8e95b4e

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs10-nodejs-0:10.16.3-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs10-0:3.2-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUSFixed in: rh-nodejs10-nodejs-0:10.16.3-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-nodejs10-0:3.2-3.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-nodejs8-nodejs-0:8.16.0-1.el7

redhatvendor investigatingvia redhat_api

Product: Red Hat OpenShift Container Platform 3.9Fixed in: nodejs

redhatvendor investigatingvia redhat_api

Product: Red Hat OpenShift Container Platform 3.6Fixed in: nodejs

redhatvendor investigatingvia redhat_api

Product: Red Hat OpenShift Container Platform 3.10Fixed in: nodejs

Vendor Advisories (2)

microsoft2019-Mar/CVE-2019-5737Important

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.

redhatCVE-2019-5737Low

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

References

lists.opensuse.org / opensuse-security-announce/2019-03/msg00041.html

Mailing ListThird Party Advisory

lists.opensuse.org / opensuse-security-announce/2019-04/msg00046.html

Mailing ListThird Party Advisory

lists.opensuse.org / opensuse-security-announce/2019-04/msg00059.html

Mailing ListThird Party Advisory

access.redhat.com / errata/RHSA-2019:1821

Third Party Advisory

nodejs.org / en/blog/vulnerability/february-2019-security-releases

Third Party Advisory

security.gentoo.org / glsa/202003-48

Third Party Advisory

security.netapp.com / advisory/ntap-20190502-0008

Third Party Advisory