CVE-2026-6965Tutor LMS <= 3.9.9 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Post Deletion via 'course' GET Parameter
Updated under an hour ago ()
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It affects themeum Tutor LMS – eLearning and online course solution. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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or modifying lessons, topics, and announcements in victim courses, manipulating student quiz grades, and reading unpublished lesson and quiz content.
- CVSS
- 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- May 13, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
themeum Tutor LMS – eLearning and online course solution themeum:tutor_lms_elearning_and_online_course_solution (from the name) | through 3.9.9 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/55924ea3-373c-4297-a958-5670def1f6c0?source=cve
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Utils.php#L7829
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L7829
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Utils.php#L8020
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L8020
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Lesson.php#L341
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Lesson.php#L341
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Quiz.php#L1041
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Quiz.php#L1041
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Course.php#L2045
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Course.php#L2045
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Ajax.php#L586
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Ajax.php#L586
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Announcements.php#L105
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Announcements.php#L105
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Q_And_A.php#L219
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Q_And_A.php#L219
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Q_And_A.php#L297
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Q_And_A.php#L297
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Ajax.php#L294
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Ajax.php#L294
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Lesson.php#L243
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Lesson.php#L243
- https://plugins.trac.wordpress.org/browser/tutor/trunk/classes/Course.php#L1997
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Course.php#L1997
- https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.7/classes/Ajax.php#L294
- 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#L586
- 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/Course.php#L1997
- 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/Lesson.php#L186
- 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#L341
- 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/Q_And_A.php#L297
- 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/Quiz.php#L1007
- 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#L888
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.