Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-0877

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 6.5%
CVSS Severity
CVSS v3 Score 8.1
Products affected by CVE-2026-0877


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