The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to unauthorized deletion of quiz question answers due to a missing capability check in the delete_question_answer() function of the EditQuestionAjax class in all versions up to, and including, 4.3.2.8. The AbstractAjax::catch_lp_ajax() dispatcher verifies a wp_rest nonce but performs no current_user_can() check, and the QuestionAnswerModel::delete() method only validates minimum answer counts without checking user capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete answer options from any quiz question on the site.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.7/inc/Ajax/Abs…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.7/inc/Ajax/Edi…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/learnpress/tags/4.3.2.7/inc/Models/Q…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset?old_path=/learnpress/tags/4.3.2.8&…
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/fc4afb78-fca6-4cc2-8e…
security@wordfence.com