CSP: sandbox

Content-Security-Policy
:
 sandbox;

Content-Security-Policy
:
 sandbox <value>;

where <value> can optionally be one of the following values:

allow-downloads

Allows downloading files through an <a> or <area> element with the download attribute, as well as through the navigation that leads to a download of a file. This works regardless of whether the user clicked on the link, or JS code initiated it without user interaction.

allow-forms

Allows the page to submit forms. If this keyword is not used, form will be displayed as normal, but submitting it will not trigger input validation, sending data to a web server or closing a dialog.

allow-modals

Allows the page to open modal windows by Window.alert() , Window.confirm() , Window.print() and Window.prompt() , while opening a <dialog> is allowed regardless of this keyword. It also allows the page to receive BeforeUnloadEvent event.

allow-orientation-lock

Lets the resource lock the screen orientation .

allow-pointer-lock

Allows the page to use the Pointer Lock API .

allow-popups

Allows popups (like from Window.open() , target="_blank" , Window.showModalDialog() ). If this keyword is not used, that functionality will silently fail.

allow-popups-to-escape-sandbox

Allows a sandboxed document to open new windows without forcing the sandboxing flags upon them. This will allow, for example, a third-party advertisement to be safely sandboxed without forcing the same restrictions upon the page the ad links to.

allow-presentation

Allows embedders to have control over whether an iframe can start a presentation session .

allow-same-origin

If this token is not used, the resource is treated as being from a special origin that always fails the same-origin policy (potentially preventing access to data storage/cookies and some JavaScript APIs).

allow-scripts

Allows the page to run scripts (but not create pop-up windows). If this keyword is not used, this operation is not allowed.

allow-storage-access-by-user-activation Experimental

Lets the resource request access to the parent's storage capabilities with the Storage Access API .

allow-top-navigation

Lets the resource navigate the top-level browsing context (the one named _top ).

allow-top-navigation-by-user-activation

Lets the resource navigate the top-level browsing context, but only if initiated by a user gesture.

allow-top-navigation-to-custom-protocols

Allows navigations to non- http protocols built into browser or registered by a website . This feature is also activated by allow-popups or allow-top-navigation keyword.

• Content-Security-Policy
• sandbox attribute on <iframe> elements