Acadlix LMS Plugin up to 1.1.9 on WordPress Permission Callback post_delete_assessment_file_by_id permission

Summaryinfo

A vulnerability described as critical has been identified in Acadlix LMS Plugin up to 1.1.9. This issue affects the function post_delete_assessment_file_by_id of the component Permission Callback. Executing a manipulation can lead to permission. This vulnerability is tracked as CVE-2026-103882. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Acadlix LMS Plugin up to 1.1.9. It has been declared as critical. This vulnerability affects the function post_delete_assessment_file_by_id of the component Permission Callback. The manipulation with an unknown input leads to a permission vulnerability. The CWE definition for the vulnerability is CWE-275. As an impact it is known to affect integrity, and availability. CVE summarizes:

The Acadlix LMS – AI Quiz Maker, Online Exam & Course Plugin for WordPress plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the post_delete_assessment_file_by_id function in all versions up to, and including, 1.1.9. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The route's permission callback only verifies a generic wp_rest nonce that the plugin itself emits inside the public acadlixOptions JavaScript object on every frontend page, effectively reducing the authentication requirement to unauthenticated.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-103882 since 10/01/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/31/2026). The MITRE ATT&CK project declares the attack technique as T1222.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Acadlix

Name

• LMS Plugin

Version

• 1.1.0
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.6
• 1.1.7
• 1.1.8
• 1.1.9

CPE 2.3info

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• 🔒
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CPE 2.2info

• 🔒
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• 🔒

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Once again VulDB remains the best source for vulnerability data.

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