CVE-2026-106337 in Chrome
Summary
by MITRE • 10/07/2026
UI misrepresentation in UI in Google Chrome on on Android prior to 155.0.8059.39 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 • 10/07/2026
The vulnerability identified as a user interface misrepresentation flaw within the Chromium-based Google Chrome browser for Android, specifically affecting versions prior to 155.0.8059.39, represents a significant risk related to trust and identity verification in web interactions. This class of issue allows a remote attacker to manipulate or spoof UI elements through the delivery of a specially crafted HTML page. The core technical flaw lies in the browser's rendering engine failing to correctly distinguish between legitimate interface components generated by the browser itself and those injected or manipulated via malicious script execution, thereby creating a discrepancy between what is displayed on the screen and the actual underlying state or origin of the content being presented to the user.
From a technical perspective, this vulnerability exploits weaknesses in how the rendering pipeline handles overlay elements, pop-ups, or navigation indicators. An attacker can craft an HTML page that utilizes CSS positioning, JavaScript DOM manipulation, or specific browser API behaviors to create visual overlays that mimic legitimate security dialogs, address bar contents, or certificate validation warnings. By doing so, the malicious content is visually superimposed over genuine UI elements, effectively hiding critical information such as the true URL of a phishing site or masking the fact that a secure connection has been compromised. This technique relies on the user's reliance on visual cues to determine trustworthiness, which are deliberately distorted by the exploit code.
The operational impact of this vulnerability is primarily centered around social engineering and credential harvesting. When users encounter spoofed UI elements, they may be tricked into entering sensitive information such as usernames, passwords, or credit card details into a malicious form that appears to belong to a trusted entity like a bank or email provider. For instance, an attacker could display a fake login prompt over the actual browser interface while simultaneously altering the address bar text in the UI layer to show a legitimate domain name, even though the page is hosted on a different server. This leads directly to unauthorized access and data theft, as victims believe they are interacting with secure, authentic services when they are actually communicating with an attacker-controlled endpoint.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) category CWE-829: Inclusion of Functionality from Untrusted Control Sector, specifically regarding the manipulation of user interface elements that influence security decisions. Furthermore, it maps to MITRE ATT&CK technique T1071: Application Layer Protocol, where attackers use standard web protocols to deliver malicious content, and more specifically relates to phishing tactics described under T1566.002: Spearphishing Link, although the mechanism here is visual spoofing rather than just link deception. The severity rating of Medium reflects that while exploitation requires user interaction with a crafted page, the potential for high-impact data loss makes it a critical concern for mobile users who often perform sensitive transactions on their devices.
Mitigation strategies must focus on both immediate patching and long-term architectural improvements. Users should immediately update Google Chrome to version 155.0.8059.39 or later, as this release contains the necessary fixes to prevent the rendering engine from allowing such UI spoofing attacks. Beyond updating software, users can employ additional safeguards such as enabling strict site isolation policies and utilizing browser extensions that verify certificate transparency logs in real-time rather than relying solely on visual indicators provided by the page itself. Security awareness training is also essential, emphasizing that no legitimate service will ever ask for credentials via a pop-up overlay or request verification through non-standard UI elements, regardless of how convincing they appear visually.