CVE-2026-4365: CWE-862 Missing Authorization in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
LearnPress WordPress LMS plugin versions up to 4. 3. 2. 8 have a critical vulnerability (CVE-2026-4365) due to missing authorization checks in the delete_question_answer() function. An unauthenticated attacker can exploit a publicly exposed wp_rest nonce in frontend HTML to delete any quiz answer option via a crafted POST request. This vulnerability allows unauthorized data deletion without requiring user privileges.
AI Analysis
Technical Summary
CVE-2026-4365 is a critical authorization bypass vulnerability in the LearnPress WordPress LMS plugin. The plugin exposes a wp_rest nonce in the public frontend, which is used as the sole security mechanism for the lp-load-ajax AJAX dispatcher. The delete_question_answer action lacks any capability or ownership verification, enabling unauthenticated attackers to delete quiz answer options by sending a specially crafted POST request with the publicly available nonce. This affects all versions up to and including 4.3.2.8.
Potential Impact
The vulnerability allows unauthenticated attackers to delete quiz answer options arbitrarily, leading to integrity loss of quiz data and potential disruption of course content. The CVSS score of 9.1 reflects high impact on availability and integrity with no required privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the affected plugin's AJAX endpoints and consider disabling or limiting the LearnPress plugin functionality that handles quiz answer deletion. Monitor vendor channels for updates and apply patches promptly once available.
CVE-2026-4365: CWE-862 Missing Authorization in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Description
LearnPress WordPress LMS plugin versions up to 4. 3. 2. 8 have a critical vulnerability (CVE-2026-4365) due to missing authorization checks in the delete_question_answer() function. An unauthenticated attacker can exploit a publicly exposed wp_rest nonce in frontend HTML to delete any quiz answer option via a crafted POST request. This vulnerability allows unauthorized data deletion without requiring user privileges.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4365 is a critical authorization bypass vulnerability in the LearnPress WordPress LMS plugin. The plugin exposes a wp_rest nonce in the public frontend, which is used as the sole security mechanism for the lp-load-ajax AJAX dispatcher. The delete_question_answer action lacks any capability or ownership verification, enabling unauthenticated attackers to delete quiz answer options by sending a specially crafted POST request with the publicly available nonce. This affects all versions up to and including 4.3.2.8.
Potential Impact
The vulnerability allows unauthenticated attackers to delete quiz answer options arbitrarily, leading to integrity loss of quiz data and potential disruption of course content. The CVSS score of 9.1 reflects high impact on availability and integrity with no required privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the affected plugin's AJAX endpoints and consider disabling or limiting the LearnPress plugin functionality that handles quiz answer deletion. Monitor vendor channels for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-03-17T20:45:25.774Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dd9c8b82d89c981fa11934
Added to database: 4/14/2026, 1:46:51 AM
Last enriched: 4/14/2026, 2:01:47 AM
Last updated: 4/14/2026, 6:35:50 AM
Views: 9
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