CVE-2024-34507

High

Description

An issue was discovered in includes/CommentFormatter/CommentParser.php in MediaWiki before 1.39.7, 1.40.x before 1.40.3, and 1.41.x before 1.41.1. XSS can occur because of mishandling of the 0x1b character, as demonstrated by Special:RecentChanges#%1b0000000.

SeverityHigh

CVSS7.4

Exploit probability—

Product

Mediawiki

PublishedMay 5, 2024

First seenMay 5, 2024

Weakness typeCWE-80CWE-80

How to fix

Update

mediawiki mediawiki1.39.7, 1.40.3, 1.41.1 or later

Vendor advisories

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/

Affected products

Product	Affected versions	Fixed in
mediawiki mediawiki	v < 1.39.7, 1.40.0 ≤ v < 1.40.3, 1.41.0 ≤ v < 1.41.1	1.39.7, 1.40.3, 1.41.1
fedoraproject fedora	40	—

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