CVE-2026-2634
Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS
- State
- Published
- Severity
- 9.8 Critical
- Published
- Feb 24, 2026
- Updated
- Apr 13, 2026
- Reserved
- Feb 17, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-451 User Interface (UI) Misrepresentation of Critical Information
Affected Products
| Product | Versions |
|---|---|
Firefox for iOSMozilla |
|
References
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.