The US National Security Agency warned all organizations running PHP to apply emergency updates for two critical vulnerabilities immediately or take their systems offline, just as Cloudflare Chief Technology Officer Dane Knecht said the PHP changes had gone live ahead of their scheduled 14:00 UTC release. The NSA said the flaws, tracked as CVE-2026-109618 and CVE-2026-109619 and each rated 9.2 out of 10 in severity under CVSS v4.0, often give attackers a direct path to a server’s file system or database.
Cloud security firm Wiz said every PHP version from 5.4 onward is affected by at least one of the two remote code execution vulnerabilities, which allow unauthenticated attackers to take control of servers, steal sensitive data and deface websites. Because PHP only supports branches 8.2 through 8.5, systems on older 8.1, 7.x and 5.x branches will not receive official patches from the project and must upgrade, rely on vendor backports or disconnect from the internet. Wiz credited Google’s Gemini team, OpenAI, security firm Calif and the PHP core team for coordinated disclosure of the flaws.
