CVE-2021-44857

Medium

Description

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. It is possible to use action=mcrundo followed by action=mcrrestore to replace the content of any arbitrary page (that the user doesn't have edit rights for). This applies to any public wiki, or a private wiki that has at least one page set in $wgWhitelistRead.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Mediawiki

PublishedDec 17, 2021

First seenDec 17, 2021

How to fix

Update

mediawiki mediawiki1.35.5, 1.36.3, 1.37.1 or later

Vendor advisories

security.gentoo.org/glsa/202305-24

Affected products

Product	Affected versions	Fixed in
mediawiki mediawiki	v < 1.35.5, 1.36.0 ≤ v < 1.36.3, 1.37.0 ≤ v < 1.37.1	1.35.5, 1.36.3, 1.37.1

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