thimpress LearnPress Plugin up to 4.3.2.8 on WordPress POST delete_question_answer authorization

Summaryinfo

A vulnerability classified as critical was found in thimpress LearnPress Plugin up to 4.3.2.8 on WordPress. This affects the function delete_question_answer of the component POST Handler. Executing a manipulation can lead to authorization. This vulnerability appears as CVE-2026-4365. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in thimpress LearnPress Plugin up to 4.3.2.8 on WordPress. This vulnerability affects the function delete_question_answer of the component POST Handler. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect integrity, and availability. CVE summarizes:

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.

The weakness was presented by Supakiad S.. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-4365 since 03/17/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/14/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• thimpress

Name

• LearnPress Plugin

Version

• 4.3.2.0
• 4.3.2.1
• 4.3.2.2
• 4.3.2.3
• 4.3.2.4
• 4.3.2.5
• 4.3.2.6
• 4.3.2.7
• 4.3.2.8

CPE 2.3info

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CPE 2.2info

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