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Vulnerability record · CVE-2026-4365 · published 14 April 2026

CVE-2026-4365: Missing authorization vulnerability

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.

9.1 CVSS 3.1 Critical EPSS 0.85% · top 43.4% CWE-862 · Missing authorization Deferred
9.1CVSS 3.1 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

LinkTags
https://plugins.trac.wordpress.org/browser/learnpress/trunk/inc/Ajax/AbstractAjax.php#L33
https://plugins.trac.wordpress.org/browser/learnpress/trunk/inc/Ajax/EditQuestionAjax.php#L285
https://plugins.trac.wordpress.org/browser/learnpress/trunk/inc/class-lp-assets.php#L177
https://www.wordfence.com/threat-intel/vulnerabilities/id/021bd566-1663-46ba-a616-ab554b691cbb?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-4365), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.