CVE-2026-17828 in Chrome
Summary
by MITRE • 07/30/2026
Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a significant UI spoofing flaw in Google Chrome for iOS that existed prior to version 151.0.7922.72, classified as a medium severity issue by Chromium security standards. The flaw stems from an inadequate implementation of security measures that protect against malicious web content attempting to deceive users through deceptive user interface elements. Attackers could craft specially designed HTML pages that manipulate the browser's rendering behavior to display misleading interfaces, potentially tricking users into revealing sensitive information or performing unintended actions.
The technical nature of this vulnerability falls under CWE-611 Improper Restriction of XML External Entity Reference, though more specifically relates to improper handling of user interface elements in web contexts. The flaw exploits the gap between how Chrome for iOS processes HTML content and how it validates the authenticity of UI components presented to users. This allows malicious actors to create deceptive interfaces that appear legitimate while actually executing harmful operations.
The operational impact of this vulnerability extends beyond simple deception, as it could enable sophisticated phishing attacks or credential theft attempts where users are misled into believing they are interacting with trusted websites. The mobile nature of iOS devices increases the risk since users may be more susceptible to UI manipulation on smaller screens without clear visual indicators of browser authenticity. Attackers could craft pages that mimic banking applications, social media platforms, or corporate portals, leading to unauthorized access to sensitive accounts and data.
Mitigation strategies should focus on implementing robust content security policies that prevent malicious HTML elements from altering the browser's user interface presentation. Browser vendors should enforce stricter validation of UI components and implement additional sandboxing measures for rendering potentially dangerous web content. Users should be advised to maintain current browser versions, as this vulnerability was addressed through updates that enhanced Chrome's UI verification mechanisms. The fix likely involved strengthening the browser's ability to distinguish between legitimate and malicious interface elements, particularly in how it handles HTML page rendering and user interaction elements on mobile platforms.
Security professionals should monitor for potential exploitation patterns targeting iOS users and consider implementing network-level protections such as web application firewalls that can detect and block suspicious HTML content. The vulnerability highlights the importance of mobile browser security considerations, particularly in environments where users may be less aware of security indicators due to smaller screen sizes and different interaction patterns compared to desktop browsers. Organizations should ensure their mobile device management policies include regular browser updates and educate users about recognizing potential UI spoofing attempts, especially when accessing sensitive applications through mobile browsers.