CVE-2026-2634

EUVD-2026-8446
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.
UI
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 23.62%
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
153.0.4-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
firefox
jammy
not-affected
noble
not-affected
questing
not-affected
mozjs102
jammy
ignored
noble
ignored
questing
dne
mozjs115
jammy
dne
noble
ignored
questing
dne
mozjs38
bionic
not-affected
jammy
dne
noble
dne
questing
dne
mozjs52
bionic
ignored
focal
ignored
jammy
dne
noble
dne
questing
dne
mozjs68
focal
ignored
jammy
dne
noble
dne
questing
dne
mozjs78
jammy
ignored
noble
dne
questing
dne
mozjs91
jammy
ignored
noble
dne
questing
dne
thunderbird
jammy
not-affected
noble
not-affected
questing
not-affected