CVE-2020-5217 Directive injection when using dynamic overrides with user input in RubyGems secure_headers

In Secure Headers RubyGem secureheaders, a directive injection vulnerability is present in versions before 3.8.0, 5.1.0, and 6.2.0. If user-supplied input was passed into append/overridecontentsecuritypolicydirectives, a semicolon could be injected leading to directive injection. This could be us...