Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-74962

Site isolation issue in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 5.8%
CVSS Severity
CVSS v3 Score 8.1
Products affected by CVE-2026-74962


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