[alserio]

I thought I knew but it seems that the CSP story is unclear. I couldn't find an authoritative source for either position

[SahAssar]

CSP blocks execution/inclusion, but since json does not execute and any json mimetype will not do execution there is no problem.

Any CSP-allowed other script can read that application/json script tag and decode it, but it is no different than reading any other data it has access to like any other html element or attribute.

[alserio]

That makes sense, thank you