CVE-2026-4723 in Mozilla Firefox
Summary
Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 149 and Thunderbird < 149.
Responsible
mozilla
Reservation
03/24/2026
Disclosure
03/24/2026
Entries
VulDB provides additional information and datapoints for this CVE:
| ID | Vulnerability | CWE | Exp | Cou | CVE |
|---|---|---|---|---|---|
| 352774 | Mozilla Firefox JavaScript use after free | 416 | Not defined | Official fix | CVE-2026-4723 |