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. |
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>;
<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).
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.
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
script-src-elem |
75 |
79 |
No
See bug 1529337.
|
No |
62 |
preview |
75 |
75 |
No
See bug 1529337.
|
No |
No |
11.0 |
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem