Mozilla » Firefox Esr : Security Vulnerabilities, CVEs, Published In 2021 CVSS score >= 9

CVE-2021-38503

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.
Max CVSS
10.0
EPSS Score
0.70%
Published
2021-12-08
Updated
2022-12-09
1 vulnerabilities found
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