CVE-2024-23172

MEDIUM

MediaWiki CheckUser Extension XSS via Message Definitions

Title source: llm

Description

An issue was discovered in the CheckUser extension in MediaWiki before 1.35.14, 1.36.x through 1.39.x before 1.39.6, and 1.40.x before 1.40.2. XSS can occur via message definitions. e.g., in SpecialCheckUserLog.

References (2)

Core 2

Core References

Patch, Vendor Advisory

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CheckUser/+/989179

Exploit, Vendor Advisory

https://phabricator.wikimedia.org/T347708

Scores

CVSS v3 5.4

EPSS 0.0047

EPSS Percentile 37.8%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-79

Status published

Products (1)

mediawiki/mediawiki < 1.35.14

Published Jan 12, 2024

Tracked Since Feb 18, 2026