A security issue has been found in Firefox < 64.0, where WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions.
A security issue has been found in Firefox < 64.0, where WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions granted to extensions. This could allow an extension to interfere with the loading and usage of these pages and use capabilities that were intended to be restricted from extensions.
https://www.mozilla.org/en-US/security/advisories/mfsa2018-29/#CVE-2018-18495 https://bugzilla.mozilla.org/show_bug.cgi?id=1427585
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