A week ago the Moodle developers released Vulnerability-related.PatchVulnerability updates for the still supported branches of the platform : 3.2.2 , 3.1.5 , 3.0.9 and 2.7.19 . The release notes mentioned that `` a number of security related issues were resolved Vulnerability-related.PatchVulnerability , '' but did n't provide any additional details about their nature or impact . The severity of the flaws became apparent Vulnerability-related.DiscoverVulnerability Monday , when security researcher Netanel Rubin , who found Vulnerability-related.DiscoverVulnerability the vulnerabilities , published Vulnerability-related.DiscoverVulnerability a detailed blog post about them . They do n't seem too critical on their own , but when combined , they allow attackers to create hidden administrative accounts and execute malicious PHP code on the underlying server . The exploit takes advantage of some false assumptions made by the developers , which Rubin described as a logic flaw , an Object Injection , a double SQL injection , and an overly permissive administrative dashboard . The logic issue stems from the reimplementation of a certain function without taking into account decisions made by the original function 's developers . According to the researcher , it is the result of `` having too much code , too many developers and lacking documentation . '' `` Keep in mind that logical vulnerabilities can and will occur in almost all systems featuring a large code base , '' Rubin said . `` Security issues in large code bases is , of course , not Moodle specific . '' Gaining administrative privileges on the Moodle platform is not only dangerous because attackers could install a PHP backdoor by uploading malicious plug-ins or templates , but also because Moodle installations store sensitive and private information about students taking online courses