PT-2026-49690
CVE-2026-12321
·
Published
2026-06-16
·
Updated
2026-07-25
Description by
CVSS 2.0
6.4
MediumMetricsAV:N/AC:L/Au:N/C:P/I:P/A:N
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 152
Thunderbird versions prior to 152
Description
JIT miscompilation occurs in the JavaScript: WebAssembly component. Just-In-Time (JIT) compilation is a method used to improve the execution speed of programs by compiling code during runtime rather than before execution.
Recommendations
Update Firefox to version 152.
Update Thunderbird to version 152.
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