What you need to know about PHP2shell. Critical vulnerabilities in PHP (CVE-2026-109618, CVE-2026-109619)
Two critical remote code execution vulnerabilities have been found in PHP itself. Treat all versions as affected. The vulnerabilities, CVE-2026-109618 and CVE-2026-109619, both have a CVSS v4.0 score of 9.2. The PHP security team will release fixes on October 21, 2026, at 16:00 CEST / 10:00 EDT / 07:00 PT. If you run PHP anywhere in your stack, please stay tuned for workarounds and patches. Be prepared to take action.