WebExtension scripts in Firefox < 51 can use the data: protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions.
WebExtension scripts in Firefox < 51 can use the data: protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions.
https://www.mozilla.org/en-US/security/advisories/mfsa2017-01/#CVE-2017-5386 https://bugzilla.mozilla.org/show_bug.cgi?id=1319070
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