CVE-2023-45369: Mediawiki

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

An issue was discovered in the PageTriage extension for MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. Usernames of hidden users are exposed.

Affected products

• Mediawiki Mediawiki: before 1.35.12 (fixed in 1.35.12); from 1.36.0, before 1.39.5 (fixed in 1.39.5); version 1.40.0 only

Published 2023-10-09. Last modified 2026-06-17.