CVE-2026-2634

Critical · 9.8

CVSS

9.8

EPSS

0.5%

Published

Feb 24, 2026

CISA due date

—

The record

Malicious scripts could cause desynchronization between the address bar and web content before a response is received in Firefox iOS, allowing attacker-controlled pages to be presented under spoofed domains. This vulnerability was fixed in Firefox for iOS 147.4.

Affected packages

Ecosystem	Package	Introduced	Fixed