CVE-2025-13563: Lizza LMS Pro Privilege Escalation Flaw

CVE-2025-13563 Overview

The Lizza LMS Pro plugin for WordPress contains a critical Privilege Escalation vulnerability in all versions up to and including 1.0.3. The vulnerability exists in the lizza_lms_pro_register_user_front_end function, which fails to properly restrict user role assignments during the registration process. This flaw enables unauthenticated attackers to register new accounts with administrator privileges, effectively granting complete control over the affected WordPress installation.

Critical Impact

Unauthenticated attackers can register with administrator privileges, gaining full control of the WordPress site including the ability to modify content, install malicious plugins, access sensitive data, and compromise other users.

Affected Products

• Lizza LMS Pro plugin for WordPress versions up to and including 1.0.3
• WordPress sites using vulnerable Lizza LMS Pro installations
• Lizza LMS Education WordPress Theme implementations

Discovery Timeline

• 2026-02-19 - CVE-2025-13563 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2025-13563

Vulnerability Analysis

This privilege escalation vulnerability (CWE-269: Improper Privilege Management) stems from inadequate access control implementation in the user registration functionality. The lizza_lms_pro_register_user_front_end function processes user registration requests from the front-end of WordPress sites without validating or sanitizing the role parameter supplied by users.

In a properly secured implementation, user registration functions should either assign a fixed, low-privilege default role (such as "subscriber") or validate role assignments against an allowlist of permitted roles. The vulnerable function instead accepts arbitrary role values from user-supplied input, allowing attackers to specify "administrator" as their desired role during registration.

The attack requires no prior authentication, making it trivially exploitable by any remote attacker with network access to the WordPress site. Successful exploitation immediately grants administrative capabilities, enabling complete site takeover.

Root Cause

The root cause is improper privilege management in the user registration handler. The lizza_lms_pro_register_user_front_end function accepts user role assignments directly from untrusted input without implementing role validation or enforcing a secure default role. This violates the security principle of least privilege and fails to implement proper authorization checks on sensitive operations.

Attack Vector

The attack is network-based and requires no authentication or user interaction. An attacker simply accesses the WordPress site's registration functionality exposed by the Lizza LMS Pro plugin and submits a registration request with the role parameter set to "administrator." The vulnerable function processes this request without validation, creating a new administrator account for the attacker.

Once the malicious administrator account is created, the attacker can:

• Log in with full administrative privileges
• Install backdoor plugins or themes
• Modify site content and user data
• Access database credentials and sensitive configuration
• Pivot to attack other systems on the same infrastructure

The vulnerability manifests during the user registration process where the role parameter is accepted without validation. The registration function processes the attacker-supplied role value directly, bypassing intended access controls. For detailed technical analysis, refer to the Wordfence Vulnerability Report.

Detection Methods for CVE-2025-13563

Indicators of Compromise

• Newly created administrator accounts that were not authorized by legitimate site administrators
• User registration activity originating from suspicious IP addresses or geolocations
• Unexpected changes to site configuration, themes, or installed plugins following user registration events
• Web server access logs showing POST requests to the plugin's registration endpoint with administrator role parameters

Detection Strategies

• Monitor the wp_users and wp_usermeta tables for newly created accounts with administrator capabilities
• Implement logging for all user registration events and alert on any registration with elevated role assignments
• Deploy web application firewall (WAF) rules to detect and block registration requests containing administrator or editor role parameters
• Use WordPress security plugins to audit user creation events and flag unexpected privilege assignments

Monitoring Recommendations

• Enable comprehensive access logging on the WordPress installation with particular attention to registration endpoints
• Configure real-time alerting for any new administrator account creation
• Implement SentinelOne Singularity for endpoint monitoring to detect post-exploitation activities such as webshell deployment or unauthorized file modifications
• Review administrator user lists regularly and remove any unrecognized accounts immediately

How to Mitigate CVE-2025-13563

Immediate Actions Required

• Audit existing WordPress user accounts and remove any unauthorized administrator accounts immediately
• Disable or uninstall the Lizza LMS Pro plugin until a patched version is available
• Change passwords for all legitimate administrator accounts as a precautionary measure
• Review site for any signs of compromise including unauthorized plugins, themes, or modified files
• Implement IP-based access restrictions for WordPress administrative functions where feasible

Patch Information

As of the last NVD update on 2026-02-19, users should check the ThemeForest product page for updated versions of Lizza LMS Pro that address this vulnerability. Upgrade to a version higher than 1.0.3 once a security patch is released by the vendor. Monitor the Wordfence threat intelligence report for updates on patch availability.

Workarounds

• Disable the Lizza LMS Pro plugin entirely until a patched version is available
• Implement a web application firewall rule to block requests containing role parameters in registration forms
• Restrict public access to user registration functionality using server-level access controls
• Consider using an alternative LMS plugin with proper security controls until the vulnerability is addressed

# WordPress CLI: List all administrators for audit
wp user list --role=administrator --fields=ID,user_login,user_email,user_registered

# Disable the vulnerable plugin via WP-CLI
wp plugin deactivate lizza-lms-pro

# Remove unauthorized administrator accounts (replace USER_ID with actual ID)
# wp user delete USER_ID --reassign=1