CVE-2024-23176 PUBLISHED

Assigner: mitre
Reserved: 12.01.2024 Published: 14.09.2026 Updated: 14.09.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS Score: 5.4

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	MediaWiki
Product	MassMessage
Versions	Default: unaffected affected from 0 to 1.40.2 (excl.)

References

https://lists.wikimedia.org/hyperkitty/list/mediawiki-announce@lists.wikimedia.org/message/TDBUBCCOQJUT4SCHJNPHKQNPBUUETY52/
https://phabricator.wikimedia.org/T347742

Problem Types

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') CWE