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PHP Vulnerability, php2shell (CVE-2026-109618 / CVE-2026-109619)
Vulnerabilities
On October 21, 2026, a critical security vulnerability known as PHP2Shell was publicly disclosed. The vulnerability affects the PHP software runtime used by web applications and could potentially allow attackers to execute unauthorized commands on vulnerable systems.
Within 24 hours of the disclosure, Block 64 upgraded all systems featuring PHP to version 8.4.27, which includes the security fix for PHP2Shell. The update was released to all production regions as on October 22, 2026.
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