When using a content-security-policy and I try to follow a process in Chrome 41 (beta) using window.URL.createObjectURL I get an error like the following:
Refused to load plugin data from 'blob:http%3A//localhost%3A7000/f59612b8-c760-43a4-98cd-fe2a44648393' because it violates the following Content Security Policy directive: "object-src blob://*"
With a content security policy that restricts object-src
or otherwise default-src
one can reproduce the issue (with jQuery for convenience) like this:
blob = new Blob(
["%PDF-1.\ntrailer<</Root<</Pages<</Kids[<</MediaBox[0 0 3 3]>>]>>>>>>"],
{ type: "application/pdf" })
$("<embed>").attr("src", window.URL.createObjectURL(blob))
.appendTo(document.body)
It seems from the spec that this should work, as it does for data://*
. I have tried also blob
, blob:
, blob:*
, blob:http*
, blob:http:*
, blob:http://*
, but to no avail.
What does work, but for apparent reasons is undesirable, is object-src *
.
Has anyone had any success getting blobs to load with a content security policy? Is this a problem upstream, or have I overlooked something?