WordPress.DB.RestrictedFunctions.mysql_mysql_errno
mysql mysql errno
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 | Wordfence Security – Firewall, Malware Scan, and Login Security | 21 | 1,592 | 2,973 | 5m+ | Output is not escaped | ||
| #2 | Database Access with Adminer | 22 | 983 | 2,553 | 1k+ | Non-prefixed global variable | ||
| #3 | ManageWP Worker | 22 | 507 | 565 | 1m+ | Non-prefixed class | ||
| #4 | WP Umbrella: Update Backup Restore & Monitoring | 22 | 921 | 919 | 70k+ | Exception output is not escaped | ||
| #5 | Clone | 23 | 244 | 262 | 40k+ | Output is not escaped | ||
| #6 | Database Manager – WP Adminer | 24 | 1,005 | 2,752 | 20k+ | Non-prefixed global variable | ||
| #7 | Softaculous | 24 | 115 | 49 | 10k+ | file system operations fread | ||
| #8 | UpdraftPlus: WP Backup & Migration Plugin | 24 | 277 | 299 | 3m+ | Non-prefixed global variable |
