CVE-2024-23176

MassMessage Extension XSS via i18n Key

Published Sep 14, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
An issue was discovered in the MassMessage extension in MediaWiki before 1.40.2. For a Special:MassMessage?uselang=x-xss URL, the i18n key massmessage-form-page-help allows XSS.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki massmessage
Vendors & Products Mediawiki
Mediawiki massmessage
Type Values Removed Values Added
Title MassMessage Extension XSS via i18n Key
Type Values Removed Values Added
Title MassMessage Extension Cross‑Site Scripting via i18n Key in MediaWiki
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title MassMessage Extension Cross‑Site Scripting via i18n Key in MediaWiki
Type Values Removed Values Added
Description An issue was discovered in the MassMessage extension in MediaWiki before 1.40.2. For a Special:MassMessage?uselang=x-xss URL, the i18n key massmessage-form-page-help allows XSS.
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 14, 2026, 3:23 PM
Reserved
Jan 12, 2024, 12:00 AM
Status
Awaiting Analysis
Published
Sep 14, 2026, 7:17 AM
Modified
Sep 28, 2026, 2:10 PM