We would like to give you advance notice of two critical security vulnerabilities in PHP, tracked by the PHP security community as CVE-2026-109618 and CVE-2026-109619. Based on current information, both allow the execution of malicious code on affected systems (remote code execution) and have been rated by the PHP Security Team with a severity of “critical” (CVSS 9.2).
Current status The official security update will be released today, 21 October 2026, at 14:00 UTC. Confirmed details on affected versions and the root cause will only be available from that point onwards. Official patches are expected only for currently supported PHP versions (8.2 and newer). No official fix is expected for older versions.
Who is affected? Potentially all systems running PHP, regardless of whether you use a Managed or Unmanaged Service with us. Remediation is only possible at the level of the PHP installation itself, not within the application.
What we are doing (Managed Services) Based on the information currently available, we are preparing configuration and hardening measures and will verify them against the official details once the patch has been released. Where an official patch is available, we will apply it in coordination with you. Where your application runs on a PHP version for which no patch will be released, we will contact you directly to agree on next steps, in particular risk mitigation and, in the medium term, migration to a supported PHP version.
What you should do (Unmanaged Services) For Unmanaged Services, remediation is your responsibility. We strongly recommend the following:
Check now which PHP versions are in use on your systems. Plan to apply the official update immediately after its release; attack attempts are to be expected shortly after the patch becomes public. If you are using a PHP version for which no patch will be released: verify your application’s compatibility with a supported PHP version and prepare the upgrade.
Next update We will follow up today by 14:00 UTC at the latest with an assessment based on the official release. Affected Managed customers will additionally be contacted individually.
If you have any questions, you can reach us at any time at support@anexia-it.com, quoting the CVE numbers listed above.