Description
The wiki subsystem in Moodle through 2.3.11, 2.4.x before 2.4.9, 2.5.x before 2.5.5, and 2.6.x before 2.6.2 does not properly restrict (1) view and (2) edit access, which allows remote authenticated users to perform wiki operations by leveraging the student role and using the Recent Activity block to reach the individual wiki of an arbitrary student.
Remediation
References
Related Vulnerabilities
Joomla! Core 3.x.x Cross-Site Scripting (3.7.0 - 3.10.6)
Drupal Core 9.0.0 Cross-Site Request Forgery (9.0.0)
WordPress Plugin WHOIS 'domain' Parameter Cross-Site Scripting (1.4.2.2)
WordPress Plugin Email Subscribers & Newsletters SQL Injection (4.1.7)
WordPress Plugin Orbit Fox by ThemeIsle Multiple Vulnerabilities (2.10.2)