CVE-2026-4723 — Use-after-free in the JavaScript Engine component
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Published: 2026-03-24 · CVSS: 9.8 · CVSS 3.1
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7