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Improper Encoding or Escaping of Output Affecting mediawiki package, versions <1:1.31.7-1

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.12% (46th percentile)
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NVD
5.3 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-DEBIAN11-MEDIAWIKI-561405
  • published 27 Mar 2020
  • disclosed 3 Apr 2020
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Introduced: 27 Mar 2020

CVE-2020-10960 Open this link in a new tab
CWE-116 Open this link in a new tab

How to fix?

Upgrade Debian:11 mediawiki to version 1:1.31.7-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).