Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-12311

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 8.2%
CVSS Severity
CVSS v3 Score 4.7
Products affected by CVE-2026-12311


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