It has come to our attention of a bug in Magento 2.4 OSE that causes the CPU(s) to spike, and consume huge amounts of memory.
Impacted versions: Magento 2.4.0 OSE, Magento 2.4.1 OSE
The problem is with the Magento CSP Module. Disabling the module and recompile will fix the issue. Removing a caching engine like Redis has no effect. [Ideally you should use Ramjet FPC Booster anyway.]
More information can be found on GITHUB >>
and on Magento’s site >>
sudo php bin/magento module:disable Magento_Csp
They say a fix will be available in the 2.4.2 release.