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What is default-src self?
default-src is a fallback directive used to specify the default content policy for most of the source directives. Common uses include default-src ‘self’ to allow content from the current origin (but not its subdomains) and default-src ‘none’ to block everything that’s not explicitly whitelisted.
What is default-SRC in CSP?
The HTTP Content-Security-Policy (CSP) default-src directive serves as a fallback for the other CSP fetch directives. For each of the following directives that are absent, the user agent looks for the default-src directive and uses this value for it: child-src.
Why is eval dangerous?
‘unsafe-eval’ allows the application to use the eval() JavaScript function. This reduces the protection against certain types of DOM-based XSS bugs, but makes it easier to adopt CSP. If your application doesn’t use eval() , you can remove this keyword and have a safer policy.
What is frame SRC?
The HTML src Attribute is used to specifies the document URL which is used to display in the frame. Syntax: Attribute Values: It contains single value URL which specifies the source of the document. The possible value of the URL is: absolute URL: It points to another website.
What is the default SRC policy in CSP?
The HTTP Content-Security-Policy (CSP) default-src directive serves as a fallback for the other CSP fetch directives. For each of the following directives that are absent, the user agent looks for the default-src directive and uses this value for it: One or more sources can be allowed for the default-src policy:
When to use default SRC as a fallback?
The default-src directive is a fallback. You will often see default-src referred to as a fallback for other directives. For example, if you DO specify a default-src, but DO NOT specify a style-src directive, then the value you specified for default-src will be used for as the style-src policy.
What does unsafe-inline do for default SRC?
If you instead specify ‘unsafe-inline’ for default-src, then that causes the browser to fail to do CSP checks for any inline resources in your document — stylesheets, etc., too, not just scripts.
Which is the default SRC for loading Javascript?
‘self’ cdn.example.com. The default-src is the default policy for loading content such as JavaScript, Images, CSS, Fonts, AJAX requests, Frames, HTML5 Media. See the Source List Reference for possible values.