CVE-2021-42048

MEDIUM

MediaWiki < 1.36.2 - Stored Cross-Site Scripting via Growth Extension Newcomer Home Page Footer

Title source: llm
STIX 2.1

Description

An issue was discovered in the Growth extension in MediaWiki through 1.36.2. Any admin can add arbitrary JavaScript code to the Newcomer home page footer, which can be executed by viewers with zero edits.

References (2)

Core 2
Core References
Patch, Vendor Advisory x_refsource_misc
https://phabricator.wikimedia.org/T289064

Scores

CVSS v3 4.8
EPSS 0.0022
EPSS Percentile 44.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
mediawiki/mediawiki < 1.36.2
Published Sep 29, 2022
Tracked Since Feb 18, 2026