MediaWiki before 1.15.3, and 1.6.x before 1.16.0beta2, does not properly handle a correctly authenticated but unintended login attempt, which makes it easier for remote authenticated users to conduct phishing attacks by arranging for a victim to login to the attacker's account and then execute a crafted user script, related to a "login CSRF" issue.
Severity
Medium 6.0
Published
20 Apr 2010
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
1.3% in the next 30 daysHigher than 70% of CVEs. EPSS by FIRST, 12 Nov 2026