Cross-origin images can be read in violation of the same-origin policy, in Firefox before 66.0, by exporting an image after using createImageBitmap to read the image and then rendering the resulting bitmap image within a canvas element.
Cross-origin images can be read in violation of the same-origin policy, in Firefox before 66.0, by exporting an image after using createImageBitmap to read the image and then rendering the resulting bitmap image within a canvas element.
https://www.mozilla.org/en-US/security/advisories/mfsa2019-07/#CVE-2019-9797 https://bugzilla.mozilla.org/show_bug.cgi?id=1528909
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