Medium (5.4). EPSS 0.3% chance of exploitation in the next 30 days.
Incorrect Authorization vulnerability in The Wikimedia Foundation Mediawiki - OAuth Extension allows Authentication Bypass.This issue affects Mediawiki - OAuth Extension: from 1.39 through 1.43.
Severity
CVSS 3.1
5.4 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-11-01)