Two critical PHP vulnerabilities (CVE-2026-109618 and CVE-2026-109619) can allow unauthenticated attackers to execute code on affected web servers. Both carry a CVSS v4.0 score of 9.2, and exploitation attempts are already being observed in the wild.
PHP has released the following fixed versions:
PHP branch
Fixed version
PHP 8.5
8.5.12
PHP 8.4
8.4.27
PHP 8.3
8.3.36
PHP 8.2
8.2.35
If you manage your own server or VPS, install the appropriate update immediately.














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