Cross-site Scripting (XSS) Affecting mediawiki package, versions <1:1.35.2-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.07% (33rd percentile)

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  • Snyk IDSNYK-DEBIAN12-MEDIAWIKI-1553759
  • published10 Apr 2021
  • disclosed9 Apr 2021

Introduced: 9 Apr 2021

CVE-2021-30458  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Debian:12 mediawiki to version 1:1.35.2-1 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:12 relevant fixed versions and status.

An issue was discovered in Wikimedia Parsoid before 0.11.1 and 0.12.x before 0.12.2. An attacker can send crafted wikitext that Utils/WTUtils.php will transform by using a <meta> tag, bypassing sanitization steps, and potentially allowing for XSS.

CVSS Scores

version 3.1