There is 1 open security issue in buster.
1 issue left for the package maintainer to handle:
An issue was discovered in the gon gem before gon-6.4.0 for Ruby. MultiJson does not honor the escape_mode parameter to escape fields as an XSS protection mechanism. To mitigate, json_dumper.rb in gon now does escaping for XSS by default without relying on MultiJson.
You can find information about how to handle this issue in the security team's documentation.