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Shield protecting a WordPress server as a PHP vulnerability warning turns into a green checkmark

PHP2Shell: The Critical PHP Vulnerability Every WordPress Site Owner Needs to Know About (And How to Fix It)

On October 21, 2026, the PHP project released emergency security updates to fix two critical vulnerabilities, now nicknamed "PHP2Shell." If your business website runs on WordPress, it runs on PHP, so this one matters to you, even if you've never thought about PHP before. Here's what happened, why it matters for your business, and the exact steps to make sure your site is protected. What Happened? PHP is the programming language that powers WordPress, WooCommerce, and a huge share of the web. Two flaws were found in PHP itself: CVE-2026-109618 ("RCE via OOM corruption"): If a web request pushes PHP to its ...

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