{"id":"CVE-2019-5737","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-5737","generatedAt":"2026-10-27T23:38:00.031Z","title":"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.","description":"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.","published":"2019-03-28T17:29:02.000Z","lastModified":"2026-06-17T02:38:08.000Z","status":"Modified","sourceIdentifier":"cve-request@iojs.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-400","CWE-770"],"affected":["nodejs/node.js","opensuse/leap"],"epss":{"score":0.16184,"percentile":0.96914,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 16.2%, higher than 97% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html","tags":["Mailing List","Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html","tags":["Mailing List","Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00059.html","tags":["Mailing List","Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"https://access.redhat.com/errata/RHSA-2019:1821","tags":["Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/","tags":["Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"https://security.gentoo.org/glsa/202003-48","tags":["Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"https://security.netapp.com/advisory/ntap-20190502-0008/","tags":["Third Party Advisory"],"source":"cve-request@iojs.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00041.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00046.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00059.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2019:1821","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.gentoo.org/glsa/202003-48","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20190502-0008/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-5737","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}