fix: beef up CSP headers #1759
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fix: beef up CSP headers #1759
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let's add |
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Ah great, this actually breaks SVGs in Firefox because of a longstanding bug:
There is no solution apparently except not to use |
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Improves the CSP a bit, following advice from Mozilla Observatory.
default-srcis'none'form-actionandframe-ancestorsimg-srcandmedia-srcto just what we needPinafore doesn't need to run in an iframe, and it does need to send XHRs and img/audio/video requests to arbitrary origins, but most stuff we can just block