Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-4140

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 15.9%
CVSS Severity
CVSS v3 Score 10.0
Products affected by CVE-2021-4140


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