CVE-2021-42043

MEDIUM

MediaWiki < 1.36.2 - Cross-Site Scripting via Special:MediaSearch intitle: Operator

Title source: llm
STIX 2.1

Description

An issue was discovered in Special:MediaSearch in the MediaSearch extension in MediaWiki through 1.36.2. The suggestion text (a parameter to mediasearch-did-you-mean) was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript via the intitle: search operator within the query.

References (2)

Core 2
Core References
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://phabricator.wikimedia.org/T291600

Scores

CVSS v3 6.1
EPSS 0.0044
EPSS Percentile 63.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
mediawiki/mediawiki < 1.36.2
Published Oct 06, 2021
Tracked Since Feb 18, 2026