CVE Catalog

CVE-2026-103882

CriticalCVSS 9.1
Published: Translated: NVD NIST

Summary

The Acadlix LMS plugin for WordPress (versions up to and including 1.1.9) is vulnerable to arbitrary file deletion due to insufficient file path validation in the post_delete_assessment_file_by_id function. Authenticated attackers with subscriber-level access or higher can delete arbitrary files on the server, potentially leading to remote code execution when critical files such as wp-config.php are deleted. The route's permission callback only verifies a generic wp_rest nonce emitted in the public acadlixOptions JavaScript object on every frontend page, effectively reducing the authentication requirement to unauthenticated.

Risk Assessment

An attacker can delete critical server files, causing site unavailability or remote code execution. Due to the publicly available nonce, the risk is high even for unauthenticated users.

Recommendation

Update the Acadlix LMS plugin to a version later than 1.1.9 or disable it. Consider implementing backups and file integrity monitoring to detect unauthorized deletions.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS