CSP Bypass in Cross-Origin Frame via Object Tag with Data URI in Firefox < 70

CSP Bypass in Cross-Origin Frame via Object Tag with Data URI in Firefox < 70

CVE-2019-17000 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

An object tag with a data URI did not correctly inherit the document's Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs. This vulnerability affects Firefox < 70.

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