Thank you for reporting this bug, AaylaSecura. I have confirmed this to be an security problem (rated sec-high in accordance with previous canvas bugs and our [Security Severity Ratings](https://wiki.mozilla.org/Security_Severity_Ratings). I have also nominated this bug for a bug bounty. I'm moving this in the Canvas 2D component and will include people who have worked on Canvas-related Same Origin Policy bypasses in the past.
Bug 1526218 Comment 2 Edit History
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Thank you for reporting this bug, AaylaSecura. I have confirmed this to be an security problem (rated sec-high in accordance with previous canvas bugs and our [Security Severity Ratings](https://wiki.mozilla.org/Security_Severity_Ratings)). I have also nominated this bug for a bug bounty. I'm moving this in the Canvas 2D component and will include people who have worked on Canvas-related Same Origin Policy bypasses in the past.