Hello
The current version of EB PHP 7.4 is 7.4.21, released on July 1 2021. That is almost five months ago.
Since this version, there have been five patch releases, four of them security related.
Please update the EB environments to 7.4.26, the latest as of this thread: https://www.php.net/archive/2021.php#2021-11-18-1
This current adoption rate of security releases is unacceptably slow. Please work to improve delivery of updates to the PHP platform.
PHP 8 suffers from the same problem, currently sitting at 8.0.8 while the latest release is 8.0.13.