CVE-2026-100792

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 157 Firefox ESR versions prior to 153.4 Firefox ESR versions prior to 140.17 Thunderbird versions prior to 157

Description JIT miscompilation occurs in the JavaScript: WebAssembly component. JIT (Just-In-Time) compilation is a method of improving program execution speed by compiling code during runtime rather than before execution.

Recommendations Update Firefox to version 157 or later. Update Firefox ESR to version 153.4 or later. Update Firefox ESR to version 140.17 or later. Update Thunderbird to version 157 or later.