i search the changelog for the Versions of Lucee, but i can not find any link or somthing lik this. Not in the Lucee-Admin-Upgrade-Template, nor on the Homepage or the https://lucee.daemonite.io
You can find them on the Downloads page: https://download.lucee.org/ (at the bottom of the “Release” section).
And you can find here on the forum under the tag Release
There isn’t one for 5.3.7.48
it’s open source, so you can always look at the source