Description
An issue was discovered in MediaWiki before 1.35.1. Missing users (accounts that don't exist) and hidden users (accounts that have been explicitly hidden due to being abusive, or similar) that the viewer cannot see are handled differently, exposing sensitive information about the hidden status to unprivileged viewers. This exists on various code paths.
Remediation
References
Related Vulnerabilities
MySQL CVE-2024-21173 Vulnerability (CVE-2024-21173)
Magento Improper Authorization Vulnerability (CVE-2020-24403)
WordPress Plugin Visitor Traffic Real Time Statistics SQL Injection (3.8)
WordPress Plugin Quick Featured Images Cross-Site Scripting (12.3.5)
TYPO3 Improper Input Validation Vulnerability (CVE-2009-0258)