Wordpress Alert: Cross-site contamination on shared hosting

What it looks like

Multiple sites share writable files or database credentials.

Why it matters

Compromise of one site may affect another.

What to check

Separate site accounts, databases, and writable paths where hosting allows.

Documentation

This is an exploit pattern to check in installed components, not a claim that every WordPress site has this flaw. Confirm the product and version against its advisories before treating a site as affected. See WordPress hardening guide.