CVE-2026-109705 — Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component
Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 1…
Published: 2026-10-13 · CVSS: 9.6 · CVSS 3.1
Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7