CVE-2020-35478

PoC —

CVSS 3.1

6.1 medium

EPSS

1%p70

Published

Dec 18, 2020 (Dec 18, 2020)

Modified

Jun 17, 2026

Description

MediaWiki before 1.35.1 allows XSS via BlockLogFormatter.php. MediaWiki:blanknamespace potentially can be output as raw HTML with SCRIPT tags via LogFormatter::makePageLink(). This affects MediaWiki 1.33.0 and later.

Vendors: mediawiki fedoraproject
Products: mediawiki, fedora
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.4%)

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