WebExtensions in Firefox before 60.0 can use request redirection and a filterReponseData filter to bypass host permission settings to redirect network traffic and access content from a host for which they do not have explicit user permission.
WebExtensions in Firefox before 60.0 can use request redirection and a filterReponseData filter to bypass host permission settings to redirect network traffic and access content from a host for which they do not have explicit user permission.
https://www.mozilla.org/en-US/security/advisories/mfsa2018-11/#CVE-2018-5166 https://bugzilla.mozilla.org/show_bug.cgi?id=1437325
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