CVE-2020-35474

Medium

Description

In MediaWiki before 1.35.1, the combination of Html::rawElement and Message::text leads to XSS because the definition of MediaWiki:recentchanges-legend-watchlistexpiry can be changed onwiki so that the output is raw HTML.

SeverityMedium

CVSS6.1

Exploit probability—

Product

Mediawiki

PublishedDec 18, 2020

First seenDec 18, 2020

How to fix

Update

mediawiki mediawiki1.35.1 or later

Vendor advisories

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STT5Z4A3BCXVH3WIPICWU2FP4IPIMUPC/

Affected products

Product	Affected versions	Fixed in
mediawiki mediawiki	v < 1.35.1	1.35.1
fedoraproject fedora	33	—

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