CVE-2026-8951: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Spoofing issue in the Toolbar component in Firefox for Android. This vulnerability was fixed in Firefox 151.

Affected products

• Mozilla Firefox: before 151.0.0 (fixed in 151.0.0)

Published 2026-05-19. Last modified 2026-06-17.