CVE-2022-39193

MEDIUM

MediaWiki CheckUser Extension - Unauthorized Exposure of Sensitive Edit and Action Performer Information

Title source: llm
STIX 2.1

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.x. Various components of this extension can expose information on the performer of edits and logged actions. This information should not allow public viewing: it is supposed to be viewable only by users with suppression rights.

References (1)

Core 1
Core References
Exploit, Issue Tracking, Patch, Third Party Advisory
https://phabricator.wikimedia.org/T311337

Scores

CVSS v3 5.3
EPSS 0.0017
EPSS Percentile 37.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (2)
mediawiki/mediawiki 1.39.0 (3 CPE variants)
mediawiki/mediawiki 1.39.1
Published Jan 20, 2023
Tracked Since Feb 18, 2026