CVE-2026-18013
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: Low)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a user interface spoofing issue within the iOS version of Google Chrome browser, specifically affecting versions prior to 151.0.7922.72. The flaw stems from an inadequate implementation in how the browser handles crafted HTML content, creating opportunities for malicious actors to manipulate the visual presentation of web pages. The vulnerability falls under the chromium security severity classification of low, yet it presents significant risks in terms of user deception and potential phishing attacks.
The technical nature of this vulnerability involves the improper handling of HTML elements within the iOS Chrome rendering engine, allowing attackers to craft malicious web pages that can deceive users about the true origin or nature of content they are interacting with. This UI spoofing capability enables attackers to present misleading interfaces that mimic legitimate websites or applications, potentially tricking users into revealing sensitive information or performing unintended actions. The flaw specifically impacts the browser's ability to properly validate and render HTML content in a manner that maintains user trust and security boundaries.
From an operational perspective, this vulnerability could be exploited by remote attackers through various delivery mechanisms including malicious websites, email attachments, or compromised web services. Users engaging with crafted HTML pages might experience misleading interface elements that appear to originate from trusted domains, making it particularly dangerous for phishing campaigns targeting mobile users. The low severity classification does not diminish the potential impact on user security awareness and trust in browser environments.
The vulnerability aligns with common weakness enumerations such as CWE-602, which addresses client-side input validation issues that can lead to UI manipulation attacks. This flaw also relates to ATT&CK technique T1531, which involves the use of malicious content to manipulate user interfaces for social engineering purposes. Organizations should consider this vulnerability when assessing their mobile browser security posture and implementing defense-in-depth strategies.
Mitigation strategies include immediate updating of Chrome for iOS to version 151.0.7922.72 or later, which contains the necessary patches to address the UI spoofing implementation gap. Security administrators should also implement additional monitoring for suspicious web content and user behavior that might indicate exploitation attempts. Regular security awareness training for users about recognizing phishing attempts and suspicious interface elements remains crucial in defending against such attacks.
The vulnerability demonstrates the ongoing challenges in mobile browser security where platform-specific rendering behaviors can introduce unexpected attack vectors. Browser vendors must maintain rigorous testing of UI components across different platforms and versions, particularly when implementing features that directly impact user perception and trust. This case highlights the importance of comprehensive security testing that includes both functional and security aspects of user interface implementations.
Organizations should implement browser hardening policies that include regular updates, network monitoring for malicious content delivery, and user education about the risks of interacting with untrusted web content. The vulnerability serves as a reminder that even low severity issues can have significant implications when they affect core user trust mechanisms within browser environments. Security teams should conduct regular assessments of their mobile browser usage patterns and implement appropriate controls to reduce exposure to similar UI manipulation attacks.
This vulnerability represents a classic example of how seemingly minor implementation flaws can create significant security risks in user-facing applications. The iOS Chrome implementation issue demonstrates the need for continuous security validation of all browser components, particularly those that directly influence user perception and interaction with web content. Proper patch management and security monitoring remain essential defenses against such UI spoofing attacks that exploit user trust relationships with web browsers.