CVE-2021-42042

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CVSS 3.1

4.8 medium

EPSS

<1%p44

Published

Oct 6, 2021 (Oct 6, 2021)

Modified

Jun 17, 2026

Description

An issue was discovered in SpecialEditGrowthConfig in the GrowthExperiments extension in MediaWiki through 1.36.2. The growthexperiments-edit-config-error-invalid-title MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript.

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

NVD CVE.org GitHub PoCs EPSS (0.5%)

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