CVE-2026-94181 Arc - UI Redress & Spoofing

Arc browser contains an address bar spoofing vulnerability caused by a <select> element triggering requestFullscreen without showing fullscreen notification, letting attackers spoof the browser address bar, exploit requires no special conditions.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.26% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
UI Redress
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Published
23 September 2026
Updated
15 October 2026
Weakness
CWE-451

Vendor fix

Update to the latest version of Arc browser.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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