CVE-2026-2634

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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 was fixed in Firefox for iOS 147.4.

9.8 /10

CVSS v3 : CRITICAL

V3 Legend

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

13 Apr 2026, 15:17

Type Values Removed Values Added
Summary
  • (es) Scripts maliciosos podrían causar desincronización entre la barra de direcciones y el contenido web antes de que se reciba una respuesta en Firefox iOS, permitiendo que páginas controladas por el atacante se presenten bajo dominios falsificados. Esta vulnerabilidad afecta a Firefox para iOS < 147.4.
Summary (en) 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. (en) 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.

27 Feb 2026, 21:16

Type Values Removed Values Added
CWE CWE-451

25 Feb 2026, 17:52

Type Values Removed Values Added
CPE cpe:2.3:a:mozilla:firefox:*:*:*:*:*:iphone_os:*:*
First Time Mozilla
Mozilla firefox
References () https://bugzilla.mozilla.org/show_bug.cgi?id=1975529 - () https://bugzilla.mozilla.org/show_bug.cgi?id=1975529 - Issue Tracking, Permissions Required
References () https://www.mozilla.org/security/advisories/mfsa2026-12/ - () https://www.mozilla.org/security/advisories/mfsa2026-12/ - Vendor Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 9.8
CWE NVD-CWE-noinfo

24 Feb 2026, 14:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-24 14:16

Updated : 2026-04-13 15:17

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