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Widespread PHP Flaw May Cause Many Site Outages Today

Krebs on Security·October 21, 2026·1 min read

Nearly 70% of websites are at risk from two critical PHP vulnerabilities that allow attackers to seize full control of servers. Working exploits exist and are already being used in the wild. Experts warn that many sites may experience outages today as administrators rush to update core software to patch the flaws.

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