CSP: script-src-elem
The HTTP Content-Security-Policy
(CSP) script-src-elem
directive specifies valid sources for JavaScript <script>
elements, but not inline script event handlers like onclick
.
CSP version | 3 |
---|---|
Directive type | Fetch directive |
default-src fallback |
Yes. If this directive is absent, the user agent will look for the
script-src directive, and if both of them are absent,
fallback to default-src directive.
|
Syntax
One or more sources can be allowed for the script-src-elem
policy:
Content-Security-Policy: script-src-elem <source>;
Content-Security-Policy: script-src-elem <source> <source>;
script-src-elem
can be used in conjunction with script-src
:
Content-Security-Policy: script-src <source>;
Content-Security-Policy: script-src-elem <source>;
Sources
<source>
can be any one of the values listed in CSP Source Values.
Note that this same set of values can be used in all fetch directives (and a number of other directives).
Examples
Fallback to script-src
If script-src-elem
is absent, User Agent falls back to the script-src
directive, and if that is absent as well, to default-src
.
Specifications
Specification |
---|
Content Security Policy Level 3 # directive-script-src-elem |
Browser compatibility
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