---
title: "CVE-2020-5259\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-2020-5259?format=md
keywords: index, follow
---

# CVE-2020-5259

Publication date 10 March 2020

Last updated 26 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.7 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2020-5259?format=md#impact-score)

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## Description

In affected versions of dojox (NPM package), the jqMix method is vulnerable
to Prototype Pollution. Prototype Pollution refers to the ability to inject
properties into existing JavaScript language construct prototypes, such as
objects. An attacker manipulates these attributes to overwrite, or pollute,
a JavaScript application object prototype of the base object by injecting
other values. This has been patched in versions 1.11.10, 1.12.8, 1.13.7,
1.14.6, 1.15.3 and 1.16.2

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| dojo | 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 | Needs evaluation |
| 19.10 eoan | Ignored end of life |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.7 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.7 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5259)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-5259)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-5259)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-5259)

### Other references

* <https://github.com/dojo/dojox/security/advisories/GHSA-3hw5-q855-g6cw>
* <https://github.com/dojo/dojox/commit/47d1b302b5b23d94e875b77b9b9a8c4f5622c9da>
* <https://www.cve.org/CVERecord?id=CVE-2020-5259>