Summary #

The following CSP directives cannot be used in meta elements and can only be set via headers:

  • frame-ancestors
  • sandbox
  • report-uri
Remediation #

Move these CSP directives to headers.

Classifications #
CWE-16; ISO27001-A.14.2.5; WASC-15; OWASP 2013-A5; OWASP 2017-A6
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