CVE-2026-121110 in Chrome
Summary
by MITRE • 11/03/2026
UI misrepresentation in Shopping in Google Chrome on on Android prior to 157.0.8103.38 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 11/04/2026
The vulnerability identified as a user interface misrepresentation within the Shopping component of Google Chrome on Android, specifically affecting versions prior to 157.0.8103.38, represents a significant trust boundary violation that enables remote attackers to deceive users through crafted web content. This flaw allows an adversary to manipulate the visual presentation of browser elements such as address bars, navigation buttons, or overlay dialogs, creating a discrepancy between what is displayed on the screen and the actual underlying application state or network destination. By exploiting this UI spoofing capability, an attacker can construct malicious HTML pages that mimic legitimate interfaces, thereby tricking users into interacting with fake controls or believing they are visiting trusted domains when they are actually engaging with phishing infrastructure. The severity of this issue is classified as medium by Chromium security standards because while it does not directly compromise the browser's internal memory safety or allow arbitrary code execution, it fundamentally undermines user trust and facilitates social engineering attacks that can lead to credential theft, financial fraud, or further malware installation.
From a technical perspective, this vulnerability stems from improper handling of rendering contexts or overlay positioning within the Android-specific implementation of Chrome’s shopping features. When a webpage attempts to draw elements over native UI components or manipulate focus states incorrectly, it creates an opportunity for visual deception. An attacker can leverage standard web technologies such as CSS overlays, transparent iframes, or JavaScript-driven DOM manipulation to hide legitimate browser chrome and replace it with maliciously styled content that appears identical to the genuine interface. This type of attack relies heavily on the user's inability to distinguish between authentic application UI and webpage-rendered elements, particularly in mobile environments where screen real estate is limited and users may rely more heavily on visual cues for security assessment. The flaw highlights a critical intersection between web rendering engines and native platform integration points, where strict separation of privileges and clear visual indicators are essential to prevent confusion.
The operational impact of this vulnerability extends beyond simple phishing attempts; it erodes the foundational trust model that browsers employ to protect users from malicious websites. When UI elements can be spoofed effectively, attackers can bypass user warnings about insecure connections or fake login prompts by presenting a visually convincing facade of security indicators such as padlock icons or domain names. This capability is particularly dangerous in e-commerce contexts where sensitive financial information and personal data are routinely entered. Users who believe they are securely interacting with their bank’s mobile interface or a reputable retailer may inadvertently submit credentials to an attacker-controlled server, leading to account compromise and potential financial loss. Furthermore, the ability to spoof UI elements can be used as a precursor for more sophisticated attacks, such as drive-by downloads or cross-site scripting exploitation, by lowering the user's guard through visual deception before executing malicious scripts in the background.
To mitigate this risk, users must ensure that their Google Chrome application is updated to version 157.0.8103.38 or later, which contains patches addressing these rendering inconsistencies and enforcing stricter boundaries between web content and native UI components. Security best practices also dictate enabling automatic updates for the browser to maintain protection against newly discovered vulnerabilities in real-time. Additionally, users should be educated on verifying URL consistency across different parts of the interface and being cautious when interacting with forms or buttons that appear unexpectedly or behave inconsistently during navigation. From a developer standpoint, adhering to secure coding guidelines that prevent overlay manipulation and ensuring clear visual distinction between native controls and web content can help reduce exposure to such attacks. Industry standards like CWE-201, which covers insertion of sensitive information into sent data via UI deception, and ATT&CK technique T1568, dynamic resolution or domain generation algorithms often associated with phishing infrastructure support, underscore the importance of maintaining robust visual integrity in web applications to prevent user manipulation.