description: When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy (CSP) as it should unless the sandbox attribute included "allow-same-origin". This vulnerability affects Firefox < 55.
problem types: Sandboxed about:srcdoc iframes do not inherit CSP directives
affected:
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 55, status: affected, version: unspecified, versionType: custom
}