Support Content-Security-Policies via nonce values #2480
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Content-Security-Policy is a common way of restricting which assets (javascript, styles, etc) are loaded by the browser as a way of preventing a number of vulnerabilities. Flask-Admin loads a fair amount of JavaScript and styling to support its functionality, and previously it has been difficult to get this to pass CSP checks. We can add support for CSP by taking a CSP nonce generator and using that to inject a nonce value wherever we load these resources (either asking the client to download files or with inline scripts/styles).
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Content-Security-Policy is a common way of restricting which assets (javascript, styles, etc) are loaded by the browser as a way of preventing a number of vulnerabilities.
Flask-Admin loads a fair amount of JavaScript and styling to support its functionality, and previously it has been difficult to get this to pass CSP checks.
We can add support for CSP by taking a CSP nonce generator and using that to inject a nonce value wherever we load these resources (either asking the client to download files or with inline scripts/styles).
fixes: #2344