CVE-2026-24894: PHP Frankenphp

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

FrankenPHP is a modern application server for PHP. Prior to 1.11.2, when running FrankenPHP in worker mode, the $_SESSION superglobal is not correctly reset between requests. This allows a subsequent request processed by the same worker to access the $_SESSION data of the previous request (potentially belonging to a different user) before session_start() is called. This vulnerability is fixed in 1.11.2.

Affected products

• PHP Frankenphp: before 1.11.2 (fixed in 1.11.2)

Published 2026-02-12. Last modified 2026-06-17.