Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-84133

Site isolation issue in the DOM: Push Subscriptions component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 4.0%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-84133


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