https://www.ccleaner.com/news/release-announcements/2018/9/18/ccleaner-v5476701
9/19 追記
上記リンクは Sorry, the page you're looking for can't be found :(
https://www.ccleaner.com/ccleaner/version-history
v5.46.6652 (30 Aug 2018)
https://www.ccleaner.com/ccleaner/download
からダウンロードできるのは ccsetup546.exe
https://forum.piriform.com/forum/8-ccleaner-bug-reporting/
情報なし
なかったことにされたっぽい