CVE-2026-118021

2026-10-27

Sandbox escape due to use-after-free in the XPCOM component. This vulnerability was fixed in Firefox 159, Thunderbird 159, and Firefox ESR 153.7.

Sandbox escape due to use-after-free in the XPCOM component. This vulnerability was fixed in Firefox 159, Thunderbird 159, and Firefox ESR 153.7.