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CVE-2018-18495 WebExtension content scripts can be loaded into about: pages in some circumstances, in violation of the permissions…

Description

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. This vulnerability affects Firefox < 64.

Affected products and versions

Product Affected versions Fixed in
Firefox 64 earliest → < 64 64
The 2221 CVEs of Firefox →
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