Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-100787

Sandbox escape in the XUL component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 22.8%
CVSS Severity
CVSS v3 Score 9.6
Products affected by CVE-2026-100787


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