CVE-2021-30154

PoC —

CVSS 3.1

6.1 medium

EPSS

1%p69

Published

Apr 6, 2021 (Apr 6, 2021)

Modified

Jun 17, 2026

Description

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On Special:NewFiles, all the mediastatistics-header-* messages are output in HTML unescaped, leading to XSS.

Vendors: mediawiki debian fedoraproject
Products: mediawiki, debian linux, 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 (1.3%)

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