LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_only_fields'

Summary

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to SQL Injection via the 'c_only_fields' parameter of the /wp-json/learnpress/v1/courses REST API endpoint in all versions up to, and including, 4.2.7 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Timeline

1. Sep 12, 2024, 8:30 AM UTCCVE published
2. Sep 12, 2024, 1:06 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: yes · Technical impact: total

3. Apr 11, 2025Public exploit on Exploit-DB

   EDB-52171

4. Apr 8, 2026, 5:29 PM UTCRecord last updated
5. Oct 28, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses

  through 4.2.7

References 8