CVE-2026-103882

Critical

Description

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.

SeverityCritical
CVSS9.1
Exploit probability—
ProductAcadlix LMS – AI Quiz Maker, Online Exam & Course Plugin for WordPress
PublishedOct 31, 2026
First seenNov 4, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
acadlix Acadlix LMS – AI Quiz Maker, Online Exam & Course Plugin for WordPressv ≤ 1.1.9—

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