It is not possible to customize the userDetailsChecker in CasAuthenticationProvider.

Would be possible to add a setter method (both in 5.6.x and 5.5.x) ?

Comment From: rwinch

Can you submit a PR (with test) to our main branch and we will consider backporting?

Comment From: Kyoungwoong

Can i take this one?

Comment From: Kyoungwoong

pr: #15047