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.
Published: 2026-04-14
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized Data Deletion
Action: Immediate Patch
AI Analysis

Impact

LearnPress for WordPress allows attackers to delete any quiz answer because the delete_question_answer() function performs no capability or ownership check. The only security gate is a publicly exposed wp_rest nonce, so an unauthenticated user can craft a POST request and remove an answer option. This vulnerability represents a Missing Authorization weakness (CWE-862) and results in permanent loss of quiz data for the site.

Affected Systems

The affected product is the thimpress LearnPress WordPress LMS plugin. All versions up to and including 4.3.2.8 are impacted. Users who have not updated beyond these releases are exposed.

Risk and Exploitability

The CVSS score of 9.1 indicates a high severity impact. Because the flaw can be triggered by any unauthenticated visitor through a simple POST request, the risk of exploitation is considerable, even though EPSS data is unavailable and it is not listed in the CISA KEV catalog. The lack of a capability check means the attacker needs only the public nonce to delete answers, making exploitation straightforward.

Generated by OpenCVE AI on April 14, 2026 at 03:22 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade LearnPress to the latest version (4.3.2.9 or newer).
  • If an upgrade is not immediately possible, remove or obfuscate the publicly exposed wp_rest nonce in the frontend by editing the plugin’s asset files or adding custom JavaScript to hide it.
  • Disable the wp_rest AJAX dispatcher for unauthenticated users through site security plugins or server configuration rules.
  • Verify that no delete_question_answer operations are available in REST API or admin interfaces without proper capability checks.
  • Monitor the LMS database for unexpected deletions and audit access logs for suspicious activity.

Generated by OpenCVE AI on April 14, 2026 at 03:22 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 14 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Thimpress
Thimpress learnpress – Wordpress Lms Plugin For Create And Sell Online Courses
Wordpress
Wordpress wordpress
Vendors & Products Thimpress
Thimpress learnpress – Wordpress Lms Plugin For Create And Sell Online Courses
Wordpress
Wordpress wordpress

Tue, 14 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 14 Apr 2026 02:00:00 +0000

Type Values Removed Values Added
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.
Title LearnPress <= 4.3.2.8 - Missing Authorization to Unauthenticated Arbitrary Quiz Answer Deletion
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

Subscriptions

Thimpress Learnpress – Wordpress Lms Plugin For Create And Sell Online Courses
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-14T13:48:54.581Z

Reserved: 2026-03-17T20:45:25.774Z

Link: CVE-2026-4365

cve-icon Vulnrichment

Updated: 2026-04-14T13:47:56.198Z

cve-icon NVD

Status : Deferred

Published: 2026-04-14T02:16:05.767

Modified: 2026-04-22T20:23:16.350

Link: CVE-2026-4365

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-14T16:31:06Z

Weaknesses