I had the dubious honor of having to debug a bespoke CRM that managed hundreds of millions of dollars in annual business written in Coldfusion... in the year of our Lord, 2017. It was a sea of hundreds of CFML files with no discernible architectural principles and a SQL schema in what I've come to term "Drunk Normal Form". There were several cheesy input bugs like the linked one that I had to fix. I was able to find an Eclipse-based breakpoint debugger that I hooked up to the test server to isolate and resolve the defects.
Enough people watched me do this with jaws agape that it was no trouble at all to convince management that we needed an immediate rewrite. For one reason or another I was only able to make it 20% of the way before other things took priority. Needless to say I don't have a soft spot for Coldfusion and find it surprising that it's still a thing even in 2024 [1].