CVE-2026-109720

Description

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2074160
• https://www.mozilla.org/security/advisories/mfsa2026-106/
• https://www.mozilla.org/security/advisories/mfsa2026-108/