PHP Releases Fixes for Two Critical Remote Code Execution Flaws
PHP published patches on October 21 addressing CVE-2026-109618 and CVE-2026-109619, two critical vulnerabilities that could allow unauthenticated remote code execution. The fixed versions are 8.2.35, 8.3.36, 8.4.27 and 8.5.12, or vendor packages carrying equivalent fixes. PHP-FPM users are also required to apply the update. The article advises administrators to confirm the PHP runtime actually serving web requests, not just the command-line version, and to check every deployed instance, including containers, staging servers, and forgotten applications. It also warns that vendors may backport fixes without changing version numbers, and that updating Composer dependencies does not install runtime patches.
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