{"id":"CVE-2026-104723","published":"2026-10-10T06:16:38.760","lastModified":"2026-10-13T13:30:21.620","description":"The LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 10.2.1 via deserialization of untrusted input . This makes it possible for authenticated attackers, with custom-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present. This vulnerability is only exploitable during lesson creation when a temporary lesson ID triggers the custom metadata path, and requires the attacker to hold a role with the edit_course capability, such as Instructor, Instructor's Assistant, LMS Manager, or Administrator.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-502"],"vendors":[],"products":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/lifterlms/tags/10.2.1/includes/admin/class.llms.admin.builder.php#L1218","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/lifterlms/tags/10.2.1/includes/admin/class.llms.admin.builder.php#L1576","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/lifterlms/tags/10.2.1/includes/admin/class.llms.admin.builder.php#L458","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/lifterlms/tags/10.2.1/includes/admin/class.llms.admin.builder.php#L993","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset/3729229/lifterlms/trunk/includes/admin/class.llms.admin.builder.php","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/cc7893ee-414d-4796-bb34-4d83951b95bd?source=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The LifterLMS plugin is vulnerable to PHP Object Injection during lesson creation, allowing authenticated users with edit_course capability to inject malicious PHP objects that can be exploited if other plugins or themes contain POP chains.","exploitability":"Exploitation requires an authenticated user with custom-level access and edit_course capability, plus a second plugin or theme with a POP chain present, making it moderately difficult but possible to exploit in environments with additional vulnerable components.","blast_radius":"If exploited, this vulnerability could lead to arbitrary file deletion, data exfiltration, or code execution depending on the presence of other vulnerable plugins or themes with POP chains.","remediation":"Upgrade to version 10.2.2 or later to remediate the PHP Object Injection vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["php-injection","lms","wordpress","authenticated"],"model":"garnet-coder","analyzedAt":"2026-10-13T08:52:24.879Z"}}