Description
message/index.php in Moodle through 2.5.9, 2.6.x before 2.6.9, 2.7.x before 2.7.6, and 2.8.x before 2.8.4 does not consider the moodle/site:readallmessages capability before accessing arbitrary conversations, which allows remote authenticated users to obtain sensitive personal-contact and unread-message-count information via a modified URL.
Remediation
References
Related Vulnerabilities
WordPress Plugin Comments-wpDiscuz Cross-Site Request Forgery (3.2.8)
WordPress Plugin Tutor LMS-eLearning and online course solution Multiple Vulnerabilities (1.7.6)
WordPress 3.8.x Multiple Vulnerabilities (3.8 - 3.8.16)
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2018-10890)