CVE-2025-4203: 
WordPress vulnerability analysis and mitigation

The wpForo Forum plugin for WordPress contains a SQL Injection vulnerability (CVE-2025-4203) in versions up to and including 2.4.8. The vulnerability exists in the get_members() function due to improper validation of 'offset' and 'row_count' parameters. This security issue was discovered and disclosed on October 25, 2025 (NVD).

The vulnerability stems from missing integer validation on the 'offset' and 'row_count' parameters in the get_members() function. The function uses esc_sql() for these parameters instead of enforcing numeric values when interpolating 'row_count' into a 'LIMIT offset,row_count' clause. MySQL 5.x's grammar allows a 'PROCEDURE ANALYSE' clause immediately after a LIMIT clause, which can be exploited. The vulnerability has been assigned a CVSS v3.1 base score of 7.5 HIGH with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (NVD).

When exploited, this vulnerability allows unauthenticated attackers to perform error-based or time-based blind SQL injection attacks. The successful exploitation can lead to extraction of sensitive information from the database. The high CVSS score reflects the potential for unauthorized access to confidential data without requiring authentication (NVD).

The vulnerability has been patched in version 2.4.9 of the wpForo Forum plugin. Users are strongly advised to update to this version or later to mitigate the risk. The fix includes proper validation of the 'offset' and 'row_count' parameters (WordPress Plugin).