Security Failed, help me please!

Hello, I have a problem and with a Zabbix data source in graffiti, everything works perfect. but finding a security flaw that was previously reported.
In zabbix api details, when entering the username and password, this is in plain text, it is enough to inspect the code of the grafana page to obtain the user and password in question.
According to version 6.2 I already corrected this error, but update and the problem continues
Can someone solve it, can you comment me as please?
Thank You!