{"id":27398,"date":"2026-09-22T16:30:52","date_gmt":"2026-09-22T08:30:52","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-18439"},"modified":"2026-09-22T16:30:52","modified_gmt":"2026-09-22T08:30:52","slug":"cve-2026-18439","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-18439","title":{"rendered":"CVE-2026-18439 [MEDIUM] &#8211; The Tutor LMS \u2013 eLearning and online course solution plugin for WordPress is vulnerable to"},"content":{"rendered":"<p>The Tutor LMS \u2013 eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 4.0.7 via the tutor_quiz_builder_save AJAX action due to missing validation that nested question_id, answer_id, deleted_question_ids[], and deleted_answer_ids[] values in the submitted payload belong to a quiz\/topic\/course the requester is authorized to manage. The handler only validates the top-level course_id, topic_id, and (when supplied) payload[&#8216;ID&#8217;], but the nested identifiers are passed straight into $wpdb-&gt;update\/DELETE statements in QuizBuilder::save_questions(), QuizBuilder::save_question_answers(), and QuizBuilder::handle_delete(). This makes it possible for authenticated attackers, with Instructor-level access and above, to overwrite the content and re-parent arbitrary quiz questions\/answers belonging to other instructors or administrators, and to delete arbitrary quiz question and answer rows.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Tutor LMS \u2013 eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 4.0.7 via the tutor_quiz_builder_save AJAX<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-27398","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/27398","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}