CVE-2026-17782 in Chrome
Summary
by MITRE • 07/30/2026
Incorrect security UI in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) 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 critical user interface security flaw in the chromium-based chrome browser for ios operating systems. The issue stems from an insufficient validation mechanism that fails to properly verify the authenticity of content displayed within the omnibox, which serves as the primary interface element for url entry and display. Attackers can exploit this weakness by crafting malicious html pages that manipulate how url information appears to users, potentially leading to deceptive interfaces that misrepresent the actual destination of web navigation.
The technical nature of this vulnerability falls under the category of user interface deception or spoofing attacks where the browser fails to properly isolate and validate content that should remain trusted. This flaw specifically affects the rendering and display logic of the omnibox component in chrome for ios, creating a scenario where malicious actors can manipulate visual elements that users typically trust implicitly. The vulnerability operates at the application layer of the os stack and leverages html parsing capabilities to create misleading displays.
The operational impact of this vulnerability extends beyond simple deception as it fundamentally undermines user trust in the browser's security indicators. When users see manipulated url displays, they may unknowingly navigate to malicious sites or provide sensitive information to fraudulent endpoints. This type of attack vector is particularly dangerous because it exploits the psychological trust users place in familiar browser interface elements and can be difficult to detect even for experienced users. The medium severity classification reflects the potential for significant user deception without requiring complex attack vectors or additional privileges.
This vulnerability aligns with several cybersecurity frameworks including cwe-602 client-side url validation flaws and relates to attack techniques described in the mitre att&ck framework under initial access and credential access phases where attackers seek to manipulate user perceptions. The flaw creates a pathway for phishing attacks and man-in-the-middle scenarios where users are misled about their actual browsing context.
Mitigation strategies should focus on implementing robust input validation mechanisms for all content displayed in trusted ui elements, particularly those related to url and security indicators. Browser vendors should enhance isolation between user-generated content and security-critical interface components while maintaining proper content sanitization protocols. Users should be encouraged to verify url authenticity through multiple means including visual inspection of address bars and certificate indicators, while keeping browser software updated to prevent exploitation of known vulnerabilities. The fix implemented in chrome version 151.0.7922.72 demonstrates the importance of regular security updates and the need for continuous monitoring of user interface security aspects in modern web browsers.