CSP for Deezer Embeds: iframe vs broad allowlist
If you want to drop a Deezer player into a page without punching unnecessary holes in your Content Security Policy, you’ve got a couple of decent options and one bad habit to avoid. The bad habit is the usual one: something breaks, you sprinkle domains across default-src, maybe throw in https: for good measure, and call it done. That works right up until your CSP stops being a security control and becomes decorative wallpaper. ...