Medium (4.3) in mediawiki mediawiki. 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.
Severity
CVSS 3.1
4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)