CVE-2026-8706: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Firefox for iOS hosted Reader mode on an unauthenticated local web server, allowing another application on the same device to request arbitrary URLs and receive the response rendered with the signed-in user's cookies. This vulnerability was fixed in Firefox for iOS 151.0.

Affected products

• Mozilla Firefox: before 151.0 (fixed in 151.0)

Published 2026-05-19. Last modified 2026-07-23.