Mozilla Product Security Update Advisory
Overview Mozilla has released a security update that addresses several vulnerabilities found in Firefox, Firefox ESR, and Thunderbird. Users of these products should update to the latest version. Affected Products and Vulnerabilities CVE-2026-8388, CVE-2026-8391. Firefox 150.0.2 And earlier. Firefox ESR 115.35 And earlier. Firefox ESR 140.10 And earlier. Thunderbird 140.10
