CVE-2026-6965

Description

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 3.9.9. This is due to the `get_course_id_by()` function unconditionally trusting the user-supplied `course` GET parameter as the authoritative course ID for content ownership lookups, which is then consumed by `can_user_manage()`, the plugin's sole authorization gate for instructor-level operations, causing it to evaluate instructor membership against the attacker-controlled course rather than the course that actually owns the target content object. This makes it possible for authenticated attackers, with instructor-level access and above, to perform unauthorized operations on any other instructor's course content, including permanently deleting lessons, assignments, quizzes (with cascading deletion of all student attempt data), topics, announcements, and Q&A threads, as well as creating or modifying lessons, topics, and announcements in victim courses, manipulating student quiz grades, and reading unpublished lesson and quiz content.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/55924ea3-373c-4297-a958-5670def1f6c0?source=cve

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3518400%40tutor&new=3518400%40tutor&sfp_email=&sfph_mail=

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Utils.php#L8020

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Utils.php#L7829

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Quiz.php#L888

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Quiz.php#L1041

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Quiz.php#L1007

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Q_And_A.php#L339

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Q_And_A.php#L297

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Q_And_A.php#L219

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Lesson.php#L341

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Lesson.php#L243

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Lesson.php#L186

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Course.php#L2045

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Course.php#L1997

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Announcements.php#L105

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Ajax.php#L586

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Ajax.php#L507

https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Ajax.php#L294

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L8020

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L7829

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Quiz.php#L888

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Quiz.php#L1041

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Quiz.php#L1007

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Q_And_A.php#L339

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Q_And_A.php#L297

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Q_And_A.php#L219

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Lesson.php#L341

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Lesson.php#L243

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Lesson.php#L186

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Course.php#L2045

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Course.php#L1997

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Announcements.php#L105

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Ajax.php#L586

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Ajax.php#L507

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Ajax.php#L294

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Utils.php#L8020

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Utils.php#L7829

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Quiz.php#L888

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Quiz.php#L1041

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Quiz.php#L1007

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Q_And_A.php#L339

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Q_And_A.php#L297

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Q_And_A.php#L219

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Lesson.php#L341

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Lesson.php#L243

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Lesson.php#L186

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Course.php#L2045

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Course.php#L1997

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Announcements.php#L105

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Ajax.php#L586

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Ajax.php#L507

https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Ajax.php#L294

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS