The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.
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*cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 94.0
*cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* versions up to (excluding) 91.3
*cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 91.3
https://bugzilla.mozilla.org/show_bug.cgi?id=1729517 No Types Assigned