Cross-site scripting (XSS) remains one of the most common vulnerabilities affecting WordPress sites, largely because WordPress’s flexibility – themes, plugins, user-submitted content, custom fields – creates so many places where untrusted data can slip into a page and execute as code in a visitor’s browser. An attacker who successfully injects a script can steal session… Continue reading Mitigating XSS Attacks in WordPress: A Practical Guide for Owner-Developers
Category: Database
Validation, Sanitization, and Safe Queries: The Three Layers That Actually Stop SQL Injection
Most developers can define SQL injection. Far fewer can say, precisely, which line of their code is the one preventing it. That gap matters. SQL injection has been on the OWASP Top 10 since the list existed, and it survives not because the fix is hard but because the fix is easy to believe you’ve… Continue reading Validation, Sanitization, and Safe Queries: The Three Layers That Actually Stop SQL Injection
Optimize WP_Query Performance: Skipping Meta Cache Priming the Right Way
If you’ve profiled a WordPress archive page with Query Monitor, you’ve probably seen this pattern without knowing what it was: Two queries, back to back, for the exact same batch of post IDs. One fetches the posts. The second – often slower, despite doing “less” – fetches metadata nobody asked for. That second query is… Continue reading Optimize WP_Query Performance: Skipping Meta Cache Priming the Right Way
Enterprise WordPress Performance: Smarter postmeta Key Design
Every WordPress developer has written a WP_Query with a meta_query argument. It feels natural. But at enterprise scale — hundreds of thousands of posts, millions of rows in wp_postmeta — those queries become some of the heaviest load your database carries. The good news: a significant slice of that cost is avoidable with a shift… Continue reading Enterprise WordPress Performance: Smarter postmeta Key Design