CVE-2026-2318

6.5 MEDIUM

📋 TL;DR

This vulnerability allows attackers to perform UI spoofing in Chrome's Picture-in-Picture feature. By convincing users to perform specific UI gestures on a malicious webpage, attackers can display fake UI elements that appear legitimate. All Chrome users on affected versions are vulnerable.

💻 Affected Systems

Products:
  • Google Chrome
  • Chromium-based browsers
Versions: Prior to 145.0.7632.45
Operating Systems: Windows, macOS, Linux, ChromeOS
Default Config Vulnerable: ⚠️ Yes
Notes: All default Chrome configurations are vulnerable. Mobile versions may also be affected but the CVE specifically mentions desktop.

📦 What is this software?

Chrome by Google

Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...

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⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could display fake login prompts, security warnings, or payment interfaces that trick users into entering sensitive credentials or authorizing fraudulent transactions.

🟠

Likely Case

Phishing attacks where users are tricked into entering credentials on fake login forms that appear to be legitimate websites.

🟢

If Mitigated

Users who verify URLs and are cautious with unexpected UI prompts would be less likely to fall victim, though the spoofing could still appear convincing.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires user interaction (specific UI gestures) and a crafted HTML page. No authentication bypass needed.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 145.0.7632.45 and later

Vendor Advisory: https://chromereleases.googleblog.com/2026/02/stable-channel-update-for-desktop_10.html

Restart Required: No

Instructions:

1. Open Chrome and click the three-dot menu. 2. Go to Help > About Google Chrome. 3. Chrome will automatically check for updates and install version 145.0.7632.45 or later. 4. Relaunch Chrome if prompted.

🔧 Temporary Workarounds

Disable Picture-in-Picture

all

Temporarily disable the Picture-in-Picture feature to prevent exploitation

chrome://flags/#enable-picture-in-picture
Set to Disabled

🧯 If You Can't Patch

  • Use browser extensions that block malicious websites and warn about suspicious UI elements
  • Educate users to never interact with unexpected Picture-in-Picture windows and to verify website authenticity

🔍 How to Verify

Check if Vulnerable:

Check Chrome version via chrome://settings/help or by typing 'chrome://version/' in address bar

Check Version:

google-chrome --version

Verify Fix Applied:

Confirm Chrome version is 145.0.7632.45 or higher

📡 Detection & Monitoring

Log Indicators:

  • Unusual Picture-in-Picture API calls in browser logs
  • Multiple failed authentication attempts following PiP window appearances

Network Indicators:

  • Traffic to known malicious domains that trigger PiP functionality
  • Unusual iframe loading patterns

SIEM Query:

source="chrome_logs" AND "picture-in-picture" AND ("gesture" OR "spoof")

🔗 References

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