Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-12321

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 4.4%
CVSS Severity
CVSS v3 Score 5.4
Products affected by CVE-2026-12321


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