---
id: CVE-2026-94181
title: >-
  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.
summary: >-
  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.
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N'
cwe:
  - CWE-451
vendor: The Browser Company of New York
product: Arc
affected:
  - Arc < 1.159.0
published: '2026-09-23'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T19:36:39.327'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94181'
references:
  - url: >-
      https://arc.net/security/bulletins#cve-2026-94181-address-bar-spoof-risk-missing-fullscreen-notification-via-select-element
    label: 59469e6c-7ea7-446f-8e43-06aa32c115e8
  - url: 'https://hackerone.com/reports/3711701'
    label: 59469e6c-7ea7-446f-8e43-06aa32c115e8
tags:
  - nvd
  - cve.org
epss: 0.0026
epssPercentile: 0.15733
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T19:35:29.822010Z'
ingestedAt: '2026-09-23T19:31:04.474Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.