RFC 4180, "Common Format and MIME Type for Comma-Separated Values (CSV) Files", October 2005Source of RFC: IETF - NON WORKING GROUP
Area Assignment: app
Errata ID: 5345
Publication Format(s) : TEXT
Reported By: Abed BenBrahim
Date Reported: 2018-04-30
Section 2 says:
6. Fields containing line breaks (CRLF), double quotes, and commas should be enclosed in double-quotes.
It should say:
6. Fields containing line breaks (CRLF), double quotes, and commas must be enclosed in double-quotes.
CSV is clearly unparsable if commas are not enclosed in double quotes.