A security issue has been found in Firefox before 74 where, when a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files.
A security issue has been found in Firefox before 74 where, when a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files.
https://www.mozilla.org/en-US/security/advisories/mfsa2020-08/#CVE-2020-6809 https://bugzilla.mozilla.org/show_bug.cgi?id=1420296
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