CVE-2021-4140 Information

Description

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5 Firefox < 96 and Thunderbird < 91.5.

Reference

https://www.mozilla.org/security/advisories/mfsa2022-02/ https://www.mozilla.org/security/advisories/mfsa2022-01/ https://bugzilla.mozilla.org/show_bug.cgi?id=1746720 https://www.mozilla.org/security/advisories/mfsa2022-03/