I think that this is not true in the release notes – the very first statement about CRW:

Red Hat CodeReady Workspaces 2.12 is based on Eclipse Che 2.36.
https://access.redhat.com/documentation/en-us/red_hat_codeready_workspaces/2.12/html/release_notes_and_known_issues/about-codeready-workspaces_crw

It should be Eclipse Che v7.36.