CVE-2026-58037

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Language/Language.Php, includes/Logging/BlockLogFormatter.Php, includes/Logging/LogFormatter.Php, includes/Logging/PatrolLogFormatter.Php, includes/Logging/RenameuserLogFormatter.Php, includes/Logging/TagLogFormatter.Php, includes/Specials/SpecialVersion.Php. This issue affects MediaWiki: from * before 1.46.0, 1.45.4, 1.44.6, 1.43.9.

Affected products

Mediawiki

Mediawiki

< 1.43.9, 1.44.6, 1.45.4, 1.46.0

CVSS 3.1

6.1 MEDIUM

EPSS

0.3% (19th percentile)

Weakness

CWE-79

NVD status

Analyzed

Published

2026-07-01