<p>Upgrade <code>Debian:11</code> <code>mediawiki</code> to version 1:1.35.2-1 or higher.</p>

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

Snyk CVSS

Attack Complexity Low

User Interaction Required

Scope Changed

Threat Intelligence

EPSS 0.09% (37^th percentile)

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Snyk ID SNYK-DEBIAN11-MEDIAWIKI-1244665
published 10 Apr 2021
disclosed 9 Apr 2021

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Introduced: 9 Apr 2021

CVE-2021-30458 Open this link in a new tab CWE-79 Open this link in a new tab

How to fix?

Upgrade Debian:11 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:11 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.