Improper Encoding or Escaping of Output Affecting mediawiki package, versions <1:1.31.7-1~deb10u1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.12% (47th percentile)

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  • Snyk IDSNYK-DEBIAN10-MEDIAWIKI-561406
  • published27 Mar 2020
  • disclosed3 Apr 2020

Introduced: 27 Mar 2020

CVE-2020-10960  (opens in a new tab)
CWE-116  (opens in a new tab)

How to fix?

Upgrade Debian:10 mediawiki to version 1:1.31.7-1~deb10u1 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:10 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).

CVSS Scores

version 3.1