We are using a SaaS document management system for ISO 9001 stuff written in Perl.
How do I know it’s written in Perl? Because when I messed up one of the API requests, instead of sending me one of the documented errors, it sent me an unrelated failure that included the full path to the Perl source file that generated the error.
Enterprise software remains high quality.
Oh, they assure me that this isn’t a security vulnerability.