themeum Tutor LMS Plugin up to 4.0.0 on WordPress Stored Quiz Answer Array wp_ajax_tutor_quiz_abandon sql injection

Summaryinfo

A vulnerability was found in themeum Tutor LMS Plugin up to 4.0.0. It has been declared as problematic. Affected by this issue is the function wp_ajax_tutor_quiz_abandon of the component Stored Quiz Answer Array. Such manipulation leads to sql injection. This vulnerability is referenced as CVE-2026-15022. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in themeum Tutor LMS Plugin up to 4.0.0 and classified as problematic. Affected by this issue is the function wp_ajax_tutor_quiz_abandon of the component Stored Quiz Answer Array. The manipulation with an unknown input leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to generic SQL Injection via Stored Quiz Answer Array in all versions up to, and including, 4.0.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with custom-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The payload is stored at quiz-attempt time via the wp_ajax_tutor_quiz_abandon handler, but the injected SQL executes only when a privileged user or Tutor REST API key holder requests the /wp-json/tutor/v1/quiz-attempt-details/{id} endpoint, making this a second-order (stored) injection chain.

The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-15022 since 07/08/2026. The exploitation is known to be easy. The attack may be launched remotely. The exploitation requires an enhanced level of successful authentication. 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 07/16/2026). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• themeum

Name

• Tutor LMS Plugin

Version

• 4.0

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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