WordPress.DB.RestrictedFunctions.mysql_mysqli_error
mysql mysqli error
The plugin uses a raw MySQL extension or class instead of WordPress database APIs.
Why It Shows Up
The scan found `mysql_*`, `mysqli_*`, PDO MySQL, or related database functions in plugin code.
Why It Matters
Bypassing `$wpdb` can ignore WordPress database configuration, escaping conventions, character sets, and compatibility layers.
How to Fix
- Replace raw MySQL calls with `$wpdb` methods or higher-level WordPress APIs.
- Use `$wpdb->prepare()` for dynamic values.
- If a third-party library requires a database connection, isolate it and document why WordPress APIs cannot be used.
References
Affected Plugins
| Rank | Plugin | Score | Errors | Warnings | Installs | Added | Updated | Top Issue |
|---|---|---|---|---|---|---|---|---|
| #1 | 404 Solution | 15 | 571 | 1,500 | 10k+ | Non-prefixed class | ||
| #2 | Administrator Z | 18 | 2,061 | 799 | 400 | Output is not escaped | ||
| #3 | Matomo Analytics – Powerful, Privacy-First Insights for WordPress | 19 | 1,900 | 877 | 100k+ | Exception output is not escaped | ||
| #4 | Duplicator – Backups & Migration Plugin – Cloud Backups, Scheduled Backups, & More | 21 | 2,572 | 1,277 | 1m+ | Output is not escaped | ||
| #5 | wpDataTables – WordPress Data Table, Dynamic Tables & Table Charts Plugin | 21 | 1,834 | 1,530 | 70k+ | Output is not escaped | ||
| #6 | MapSVG – Vector maps, Image maps, Google Maps | 22 | 179 | 93 | 1k+ | Missing direct file access protection | ||
| #7 | File Manager | 22 | 740 | 520 | 1m+ | Unsafe printing function | ||
| #8 | WP STAGING – WordPress Backups, Restore, Migration & Clone | 23 | 1,547 | 1,726 | 100k+ | Non-prefixed global variable | ||
| #9 | 1-Click Backup Migration | 24 | 162 | 215 | 400 | Direct Query | ||
| #10 | Backuply – Backup, Restore, Migrate and Clone | 24 | 711 | 556 | 600k+ | Non-prefixed global variable | ||
| #11 | Softaculous | 24 | 115 | 50 | 10k+ | file system operations fread | ||
| #12 | EZ SQL Reports Shortcode Widget and DB Backup | 27 | 165 | 158 | 500 | Output is not escaped | ||
| #13 | User Spam Remover | 31 | 115 | 14 | 1k+ | Output is not escaped | ||
| #14 | PW WooCommerce Bulk Edit | 34 | 219 | 149 | 20k+ | Unsafe printing function | ||
| #15 | SQL Executioner | 70 | 18 | 17 | 2k+ | Non-prefixed global variable | ||
| #16 | Run SQL Query | 78 | 13 | 8 | 500 | Non-prefixed global variable |
