I have searched through SAP help portal but I can't find anything (https://help.sap.com/viewer/product/SAP_COMMERCE/1905/en-US)
CX Commerce (hybris) 1905 support SapMachine 11 (SAP OpenJDK alternative).
You can search on help portal as "third party", you will find Third-Party Compatibility page.
Given information said that SapMachine required, not Oracle JDK nor OpenJDK.