VULNERABILITY INTELLIGENCE

CVE-2021-42042

CVSS score4.8 MEDIUM

EPSS probability0.55%

CISA KEVNot currently listed

Published2021-10-06

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

nvd@nist.gov: CWE-79

Primary references

cve@mitre.org — Patch, Vendor Advisory
cve@mitre.org — Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Vendor Advisory