Vulnerability · Published Sep 23, 2026 · Assigned by BCNY
CVE-2026-94181Address Bar Spoof Risk; Missing Fullscreen Notification via Select Element
High 7.4
In plain English
A high-severity security flaw in Arc from The Browser Company of New York. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.3%top 72.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An address bar spoofing issue in affected versions of Arc could allow an attacker to spoof the browser address bar via a <select> element that triggers requestFullscreen without displaying the fullscreen notification.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Browser Company of New York | Arc | 0 – before 1.159.0 |
Weakness: CWE-451 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N