CVE-2026-2634

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 affects Firefox for iOS < 147.4.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1975529	Issue Tracking Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-12/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:iphone_os:*:*

History

No history.

Information

Published : 2026-02-24 14:16

Updated : 2026-02-27 21:16

NVD link : CVE-2026-2634

Mitre link : CVE-2026-2634

CVE.ORG link : CVE-2026-2634

JSON object : View

Products Affected

mozilla

firefox

CWE

NVD-CWE-noinfo CWE-451

User Interface (UI) Misrepresentation of Critical Information

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