CVE-2019-5739

Name: CVE-2019-5739
Creator: NVD / NIST
Published: 2019-03-28T17:29:01.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 5.05%

Last modified Jun 17, 2026

CVE-2019-5739 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. EPSS estimates a 5.05% chance of exploitation in the next 30 days.

Description

Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

5.05%

91.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nodejs	Node.Js	<= 6.16.0
Opensuse	Leap	42.3

References

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.htmlMailing List, Third Party Advisory
https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/Vendor Advisory
https://security.gentoo.org/glsa/202003-48Third Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0008/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.htmlMailing List, Third Party Advisory
https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/Vendor Advisory
https://security.gentoo.org/glsa/202003-48Third Party Advisory
https://security.netapp.com/advisory/ntap-20190502-0008/Third Party Advisory

Timeline

Published: Mar 28, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5739?

How severe is CVE-2019-5739?

CVE-2019-5739 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.05% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5739?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5739?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST