Cross-site Scripting (XSS) Affecting mediawiki package, versions <1:1.35.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.13% (50th percentile)

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  • Snyk IDSNYK-DEBIAN11-MEDIAWIKI-1012650
  • published25 Sept 2020
  • disclosed27 Sept 2020

Introduced: 25 Sep 2020

CVE-2020-25814  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Debian:11 mediawiki to version 1:1.35.0-1 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 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked.

CVSS Scores

version 3.1