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

0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Scope Changed

    Threat Intelligence

    EPSS 0.1% (41st percentile)
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NVD
6.1 medium
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Red Hat
6.1 medium

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  • Snyk ID SNYK-DEBIAN11-MEDIAWIKI-1012643
  • published 25 Sep 2020
  • disclosed 27 Sep 2020
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Introduced: 25 Sep 2020

CVE-2020-25812 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 1:1.35.0-1 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.

An issue was discovered in MediaWiki 1.34.x before 1.34.4. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.