CVE-2026-106380 in Chrome
Summary
by MITRE • 10/07/2026
UI misrepresentation in UI in Google Chrome prior to 155.0.8059.39 allowed a remote attacker leveraging social engineering to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified as a user interface misrepresentation flaw within Google Chrome versions preceding 155.0.8059.39 represents a significant risk vector for phishing and social engineering attacks. This issue stems from the browser's rendering engine failing to correctly display or restrict certain HTML elements, allowing malicious actors to manipulate the visual presentation of web pages in ways that deceive end-users. By crafting specific HTML structures, an attacker can overlay deceptive UI components over legitimate content or alter the appearance of critical interface elements such as address bars, buttons, or security indicators. This manipulation creates a discrepancy between what the user perceives on their screen and the actual underlying code being executed by the browser engine.
From a technical perspective, this flaw exploits weaknesses in how Chrome handles layout calculations and DOM rendering priorities under specific conditions. When a crafted HTML page is loaded, it can utilize CSS positioning tricks or JavaScript-driven overlays to mimic trusted interface elements. For instance, an attacker might create a fake login box that appears to be part of the browser's native chrome rather than the webpage content itself. This technique relies on the user's trust in the visual cues provided by their web browser, such as familiar button shapes, colors, and typography. The severity is classified as low because it does not involve direct code execution or memory corruption but instead focuses entirely on deception through visual manipulation.
The operational impact of this vulnerability is primarily centered around credential theft and unauthorized access via social engineering. Since the attack requires user interaction with a crafted page, it falls squarely into the realm of phishing campaigns where victims are lured to malicious sites designed to look like legitimate services such as banking portals or email providers. If successful, users may unknowingly enter sensitive information into fields that appear authentic but are controlled by the attacker's script. This leads directly to account compromise and potential financial loss for individuals or organizations relying on these credentials for secure access.
In terms of industry standards classification, this vulnerability aligns with CWE-20: Improper Input Validation regarding how the browser processes HTML inputs without sufficient checks against deceptive rendering patterns. Furthermore, it maps closely to MITRE ATT&CK technique T1566.001: Phishing: Spearphishing Attachment or Link, specifically under the sub-category of UI Redressing attacks where attackers trick users into interacting with a fake interface that mimics a trusted application. The attack vector is classified as remote because it can be initiated over the internet without any prior access to the victim's system, relying solely on the delivery of the malicious webpage through email or web links.
Mitigation strategies for this vulnerability involve both immediate patching and long-term security hygiene practices. Users must ensure that their Google Chrome browser is updated to version 155.0.8059.39 or later, as these updates include fixes for the rendering engine logic responsible for preventing such UI spoofing techniques. Additionally, organizations should enforce strict content security policies and deploy advanced phishing protection tools that analyze not just URL reputation but also visual anomalies in web pages. Educating users to verify URLs carefully and look for subtle discrepancies in interface design remains a critical defense layer against social engineering exploits that leverage browser rendering flaws.