The LearnPress plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.4.10 via deserialization of untrusted input from the 'checkout-email' request parameter during the checkout AJAX action. The value is passed through sanitize_text_field(), which does not strip serialized object syntax, then stored in the LearnPress session table and later fed to LP_Helper::maybe_unserialize() → unserialize() (without an allowed_classes restriction) by LP_Session_Handler::get() on subsequent requests. This makes it possible for unauthenticated attackers to inject a PHP Object.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
thimpress:learnpress – wordpress lms plugin for create and sell online courses
References 6
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.4.9.1/inc/class-lp…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?reponame=&old=3750024%40learnpress…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/3e28e008-0ec1-4262-9a…
security@wordfence.com