CVE-2026-8390 PUBLISHED

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

• OpenAI Preparedness, Bill Demirkapi

• https://bugzilla.mozilla.org/show_bug.cgi?id=2038081
• https://www.mozilla.org/security/advisories/mfsa2026-45/