Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-2778

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability affects Firefox < 148, Firefox ESR < 115.33, Firefox ESR < 140.8, Thunderbird < 148, and Thunderbird < 140.8.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 6.4%
CVSS Severity
CVSS v3 Score 10.0
Products affected by CVE-2026-2778


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