In order to secure the websites and to avoid PII leakage change the referer header from HTTP to HTTPs as it sends the data in encrypted form to the server.
The Cryptographic Failure is ranked#2 in the OWASP vulnerabilities list and need to be fixed to make the website more secure.
This type of flaws are also precursor to SQL Injection. Although the site is not prone to SQL Injection but might be in future.
In order to secure the websites and to avoid PII leakage change the referer header from HTTP to HTTPs as it sends the data in encrypted form to the server. The Cryptographic Failure is ranked#2 in the OWASP vulnerabilities list and need to be fixed to make the website more secure. This type of flaws are also precursor to SQL Injection. Although the site is not prone to SQL Injection but might be in future.