---
id: CVE-2025-13132
title: >-
  This vulnerability allowed a site to enter fullscreen, after a user click,
  without a full-screen notification (toast) appearing
summary: >-
  This vulnerability allowed a site to enter fullscreen, after a user click,
  without a full-screen notification (toast) appearing. Without this
  notification, users could potentially be misled about what site they were on
  if a malicious sit…
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-1021
published: '2025-11-21'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T10:10:00.227'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13132'
references:
  - url: 'https://www.diabrowser.com/security/bulletins#CVE-2025-13132'
    label: 59469e6c-7ea7-446f-8e43-06aa32c115e8
tags:
  - nvd
epss: 0.00245
epssPercentile: 0.14408
ingestedAt: '2026-10-08T10:28:20.331Z'
---

## Overview

This vulnerability allowed a site to enter fullscreen, after a user click, without a full-screen notification (toast) appearing. Without this notification, users could potentially be misled about what site they were on if a malicious site renders a fake UI (like a fake address bar.)

## Remediation

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