CVE-2026-8094: Mozilla Firefox

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Other issue in the WebRTC component. This vulnerability was fixed in Firefox ESR 140.10.2 and Thunderbird 140.10.2.

Affected products

• Mozilla Firefox: before 140.10.2 (fixed in 140.10.2)
• Mozilla Thunderbird: before 140.10.2 (fixed in 140.10.2)

Published 2026-05-07. Last modified 2026-07-28.