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Collier, K. (2026, October 21). Critical vulnerabilities in commonly used web code spark rush to update systems. NBC News. https://www.nbcnews.com/tech/security/critical-vulnerabilities-php-update-systems-rcna604751
Collier, Kevin. “Critical vulnerabilities in commonly used web code spark rush to update systems.” NBC News, 21 Oct. 2026, https://www.nbcnews.com/tech/security/critical-vulnerabilities-php-update-systems-rcna604751.
Collier, Kevin. “Critical vulnerabilities in commonly used web code spark rush to update systems.” NBC News, October 21, 2026. https://www.nbcnews.com/tech/security/critical-vulnerabilities-php-update-systems-rcna604751.
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As of October 21, 2026, several government and popular websites across Europe have been temporarily taken offline due to critical vulnerabilities discovered in the PHP programming language. The European Union's cybersecurity team (CERT-EU) has advised organizations to update their systems or take affected sites offline immediately, as hackers could exploit these flaws to execute commands on servers remotely without authentication.
The vulnerabilities were identified by PHP developers who released patches at 10 a.m. ET on Wednesday. Websites such as Pinboard and parts of Wikipedia have already been affected, with Japanese websites for daycare centers and video games also voluntarily going offline. In Europe, government sites in the Netherlands and Finland, along with the BBC and Edinburgh council, are among those that took precautionary measures.
PHP powers nearly 70% of all identified web servers globally, including platforms like WordPress, which itself is used by about 40% of websites. This widespread use makes the vulnerabilities particularly concerning, as many sites could be at risk until updates are applied.