CVE-2026-3371 | themeum Tutor LMS Plugin up to 3.9.7 on WordPress AJAX save_course_content_order authorization

VDB-356953 · CVE-2026-3371 · GCVE-0-2026-3371 THEMEUM TUTOR LMS PLUGIN UP TO 3.9.7 ON WORDPRESS AJAX SAVE_COURSE_CONTENT_ORDER AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.2 $0-$5k 0.11 Summaryinfo A vulnerability identified as critical has been detected in themeum Tutor LMS Plugin up to 3.9.7 on WordPress. This vulnerability affects the function save_course_content_order of the component AJAX Handler. This manipulation causes authorization. This vulnerability appears as CVE-2026-3371. The attack may be initiated remotely. There is no available exploit. Detailsinfo A vulnerability has been found in themeum Tutor LMS Plugin up to 3.9.7 on WordPress and classified as critical. Affected by this vulnerability is the function save_course_content_order of the component AJAX Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.9.7. This is due to missing authorization checks in the `save_course_content_order()` private method, which is called unconditionally by the `tutor_update_course_content_order` AJAX handler. While the handler's `content_parent` branch includes a `can_user_manage()` check, the `save_course_content_order()` call processes attacker-supplied `tutor_topics_lessons_sorting` JSON without any ownership or capability verification. This makes it possible for authenticated attackers with Subscriber-level access or above to detach lessons from topics, reorder course content, and reassign lessons between topics in any course, including admin-owned courses, by sending a crafted AJAX request with manipulated topic and lesson IDs. The weakness was presented by Hunter Jensen. The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-3371 since 02/27/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/11/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type WordPress Plugin Vendor themeum Name Tutor LMS Plugin Version 3.9.0 3.9.1 3.9.2 3.9.3 3.9.4 3.9.5 3.9.6 3.9.7 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.2 VulDB Base Score: 6.3 VulDB Temp Score: 6.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 4.3 CNA Vector (Wordfence): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-639 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 02/27/2026 CVE reserved 04/11/2026 +42 days Advisory disclosed 04/11/2026 +0 days VulDB entry created 04/11/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wordfence.com Researcher: Hunter Jensen Status: Not defined CVE: CVE-2026-3371 (🔒) GCVE (CVE): GCVE-0-2026-3371 GCVE (VulDB): GCVE-100-356953 Entryinfo Created: 04/11/2026 04:10 Changes: 04/11/2026 04:10 (65) Complete: 🔍 Cache ID: 99:9EE:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸