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Two newly disclosed critical PHP vulnerabilities could expose online stores to remote code execution attacks - even without an authenticated user. If your eCommerce store runs on a self-hosted PHP platform, checking your PHP version and applying security updates should be an immediate priority. The latest reports highlight a serious threat, making understanding and addressing these critical PHP vulnerabilities a top priority for all online merchants.An illustration of a cybersecurity shield protecting an online store from critical PHP vulnerabilities. Recent PHP Security Vulnerabilities: What's Happening?On October 21, 2026, the official PHP security team issued a vital security release, bringing urgent news for the vast ecosystem of PHP-powered websites, especially eCommerce platforms. This release detailed two highly critical vulnerabilities, identified as CVE-2026-109618 and CVE-2026-109619. Both have been assigned alarming CVSS v4.0 scores of 9.2, indicating their severe nature. What makes these particular vulnerabilities so dangerous for online stores is their potential...