CVE-2026-27983: LMS Elementor Pro Privilege Escalation

CVE-2026-27983 Overview

CVE-2026-27983 is an Incorrect Privilege Assignment vulnerability affecting the designthemes LMS Elementor Pro WordPress plugin (lms-elementor-pro). This vulnerability allows attackers to perform privilege escalation, potentially gaining elevated access to WordPress sites running vulnerable versions of the plugin.

Critical Impact

Attackers can exploit incorrect privilege assignment to escalate their access level within WordPress installations, potentially compromising administrative functions and sensitive site data.

Affected Products

• LMS Elementor Pro plugin versions up to and including 1.0.4
• WordPress sites running vulnerable LMS Elementor Pro installations

Discovery Timeline

• 2026-03-05 - CVE CVE-2026-27983 published to NVD
• 2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-27983

Vulnerability Analysis

This vulnerability falls under CWE-266 (Incorrect Privilege Assignment), which occurs when a product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor. In the context of the LMS Elementor Pro WordPress plugin, this flaw allows users to gain privileges beyond what should be permitted by the application's access control mechanisms.

WordPress plugins that manage user roles and capabilities must implement strict privilege checks to ensure users cannot modify their own access levels or perform actions reserved for higher-privileged accounts. When these checks are missing or improperly implemented, attackers can exploit the gap to escalate from lower-privileged accounts (such as subscribers or contributors) to administrative roles.

Root Cause

The root cause of this vulnerability is the incorrect assignment of privileges within the LMS Elementor Pro plugin's access control logic. The plugin fails to properly validate user permissions before granting elevated access or executing privileged operations. This allows authenticated users with lower-level permissions to manipulate requests or invoke functionality intended only for administrators.

Attack Vector

The attack requires authentication to the WordPress site with a low-privileged account. Once authenticated, an attacker can exploit the privilege assignment flaw to escalate their access level. This could involve manipulating user role assignments, bypassing capability checks, or directly invoking administrative functions that lack proper authorization validation.

The vulnerability mechanism involves improper access control in the plugin's privilege management system. For detailed technical information, refer to the Patchstack Vulnerability Advisory.

Detection Methods for CVE-2026-27983

Indicators of Compromise

• Unexpected changes to WordPress user roles or capabilities, particularly users gaining administrator access
• Unusual plugin activity or modifications to LMS Elementor Pro settings by non-admin users
• Audit log entries showing privilege modifications not initiated by legitimate administrators
• New administrator accounts appearing without authorized creation

Detection Strategies

• Monitor WordPress user role changes and capability modifications in real-time
• Implement file integrity monitoring for plugin files, particularly lms-elementor-pro directory
• Review authentication logs for suspicious privilege escalation patterns
• Deploy web application firewall (WAF) rules to detect common privilege escalation attempts

Monitoring Recommendations

• Enable detailed WordPress audit logging to capture user role modifications
• Configure alerts for any changes to the wp_usermeta and wp_users tables related to capabilities
• Monitor HTTP requests to plugin endpoints for unusual parameter manipulation
• Regularly review user accounts for unauthorized privilege changes

How to Mitigate CVE-2026-27983

Immediate Actions Required

• Update LMS Elementor Pro plugin to a patched version if available from the vendor
• Audit all WordPress user accounts for unauthorized privilege escalations
• Review and restrict user capabilities to minimum necessary permissions
• Consider temporarily disabling the LMS Elementor Pro plugin until a patch is applied
• Implement additional access controls through security plugins

Patch Information

Consult the Patchstack Vulnerability Advisory for the latest patch information and remediation guidance from the vendor. Update the LMS Elementor Pro plugin to a version newer than 1.0.4 when available.

Workarounds

• Restrict plugin access to trusted administrator accounts only
• Implement additional WordPress security hardening measures using plugins like Wordfence or Sucuri
• Use role management plugins to enforce strict capability boundaries
• Enable two-factor authentication for all WordPress accounts with elevated privileges

# WordPress CLI command to audit user roles
wp user list --fields=ID,user_login,roles --format=table

# Check for recent user capability changes in database
# Review wp_usermeta for unexpected wp_capabilities modifications