---
title: "CVE-2019-5739\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-5739?format=md
keywords: index, follow
---

# CVE-2019-5739

Publication date 28 March 2019

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2019-5739?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nodejs | 26.04 LTS resolute | Not affected |
| 25.10 questing | Not affected |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2019-5739?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| nodejs | * Upstream:   [e9ae4aa](https://github.com/nodejs/node/commit/e9ae4aaaad) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5739)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-5739)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-5739)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-5739)

### Other references

* <https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/>
* <https://www.cve.org/CVERecord?id=CVE-2019-5739>