The parliament of the Netherlands and the central government of Finland removed their public-facing web services from the internet on Wednesday to prevent exploitation of critical bugs in the PHP runtime. Finland’s state IT center Valtori, the Dutch national cyber agency, and universities in Vienna and Freiburg also deactivated services, while NotuBiz pulled offline council sites for more than 100 Dutch local governments. These shutdowns follow a demonstration by security firm Calif of a working exploit that ran commands on a WordPress site using PHP 8.5.4. The PHP project scheduled an emergency patch for CVE-2026-109618 and CVE-2026-109619 at 14:00 UTC today.
The vulnerabilities are rated 9.2 on the CVSS v4.0 scale and enable remote code execution on the PHP core engine, which powers approximately 75% of the web, including Laravel and Magento. Most versions of PHP since 2004 are potentially affected. Core developer Gina Peter Banyard stated that patching is the only reliable mitigation and that commonly shared one-line config fixes are insufficient. Cloudflare has deployed stopgap WAF rules to all users to block known vectors, though the company reports that early attacks are already emerging.
