CVE-2021-42043

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CVSS 3.1

6.1 medium

EPSS

<1%p53

Published

Oct 6, 2021 (Oct 6, 2021)

Modified

Jun 17, 2026

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.

Vendors: mediawiki
Products: mediawiki
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 (0.8%)

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