CVE-2026-4365
LearnPress <= 4.3.2.8 - Missing Authorization to Unauthenticated Arbitrary Quiz Answer Deletion
The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the delete_question_answer() function in all versions up to, and including, 4.3.2.8. The plugin exposes a wp_rest nonce in public frontend HTML (lpData) to unauthenticated visitors, and uses that nonce as the only security gate for the lp-load-ajax AJAX dispatcher. The delete_question_answer action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
LearnPress <= 4.3.2.8 - Missing Authorization to Unauthenticated Arbitrary Quiz Answer Deletion
The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the delete_question_answer() function in all versions up to, and including, 4.3.2.8. The plugin exposes a wp_rest nonce in public frontend HTML (lpData) to unauthenticated visitors, and uses that nonce as the only security gate for the lp-load-ajax AJAX dispatcher. The delete_question_answer action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.
- Record
CVE-2026-4365- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-22197
The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the delete_question_answer() function in all versions up to, and including, 4.3.2.8. The plugin exposes a wp_rest nonce in public frontend HTML (lpData) to unauthenticated visitors, and uses that nonce as the only security gate for the lp-load-ajax AJAX dispatcher. The delete_question_answer action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.
- Record
EUVD-2026-22197- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fcmf-hc7m-63gh
The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing...
The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the delete_question_answer() function in all versions up to, and including, 4.3.2.8. The plugin exposes a wp_rest nonce in public frontend HTML (lpData) to unauthenticated visitors, and uses that nonce as the only security gate for the lp-load-ajax AJAX dispatcher. The delete_question_answer action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.
- Record
GHSA-fcmf-hc7m-63gh- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the delete_question_answer() function in all versions up to, and including, 4.3.2.8. The plugin exposes a wp_rest nonce in public frontend HTML (lpData) to unauthenticated visitors, and uses that nonce as the only security gate for the lp-load-ajax AJAX dispatcher. The delete_question_answer action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.
- Record
CVE-2026-4365- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-4365 is a critical vulnerability (CVSS 9.1) in Thimpress Learnpress – Wordpress Lms Plugin For Create And Sell Online Courses, published April 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.87%, the 58th percentile. No source names a fixed version.
References
wordfence.com/threat-intel/vulnerabilities/id/021bd566-1663-46ba-a616-ab554b691cbb?source=cve
plugins.trac.wordpress.org/browser/learnpress/trunk/inc/Ajax/EditQuestionAjax.php
nvd.nist.gov/vuln/detail/CVE-2026-4365
github.com/advisories/GHSA-fcmf-hc7m-63gh