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CVE-2021-42042

4.8 MEDIUM

An issue was discovered in SpecialEditGrowthConfig in the GrowthExperiments extension in MediaWiki through 1.36.2

Published: 2021-10-06 · Last updated: 2026-06-17

Severity and scoring

CVSS
4.8 MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CWE
CWE-79

Affected products

VendorProduct
mediawikimediawiki

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.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-34094 — Vulnerability in Wikimedia Foundation MediaWiki (3.8 LOW)
  • CVE-2026-34093 — Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation MediaWiki (5.3 MEDIUM)
  • CVE-2021-41801 — The ReplaceText extension through 1.41 for MediaWiki has Incorrect Access Control (8.8 HIGH)
  • CVE-2021-41800 — MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time) (5.3 MEDIUM)
  • CVE-2021-41799 — MediaWiki before 1.36.2 allows a denial of service (resource consumption because of lengthy query processing time) (7.5 HIGH)

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