CVE-2026-102314 in Chrome
Summary
by MITRE • 09/29/2026
UI misrepresentation in TabStrip in Google Chrome prior to 154.0.8037.92 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 09/29/2026
The vulnerability identified as a user interface misrepresentation within the TabStrip component of Google Chrome, specifically in versions prior to 154.0.8037.92, represents a significant trust boundary violation that exploits the browser's rendering engine to deceive end users. This flaw allows a remote attacker to manipulate visual elements associated with tab headers or navigation bars through specially crafted HTML and CSS code embedded within a malicious webpage. By leveraging inconsistencies in how the Chromium layout engine calculates dimensions, z-indexes, and positioning relative to the native UI chrome, an adversary can overlay deceptive content onto legitimate browser interface components. This technique effectively decouples the visual representation of the page from its actual security context, creating a scenario where the user perceives one state while the underlying application operates in another.
From a technical perspective, this issue falls under the category of UI Redressing attacks, which are formally classified within the Common Weakness Enumeration as CWE-1021 Improper Restriction of Rendered UI Layers or Zones and often align with MITRE ATT&CK technique T1657 Spoofing Input via Clickjacking. The core mechanism involves manipulating the Document Object Model to position malicious elements in a way that they visually overlap with critical browser controls such as address bars, tab titles, or security indicators. Because modern browsers rely heavily on visual cues for user trust and navigation decisions, this misrepresentation can lead users to believe they are interacting with a secure, legitimate site when they may actually be engaging with an attacker-controlled environment. The severity is rated as low by the Chromium team because it typically requires specific rendering conditions or user interaction patterns that do not directly result in code execution or data exfiltration without additional social engineering components.
The operational impact of this vulnerability centers on the erosion of user trust and the facilitation of subsequent attack vectors such as phishing, credential harvesting, or malware distribution. An attacker can craft a page where the address bar appears to show a trusted domain while the actual content is hosted elsewhere, or they might obscure legitimate security warnings with fake success messages. This deception makes it significantly harder for users to verify the authenticity of the website they are visiting. In enterprise environments, this could lead employees to inadvertently submit sensitive credentials to a phishing site that mimics internal portals by spoofing the browser's UI elements to hide malicious redirects or overlays. The risk is amplified in contexts where visual verification of URLs and security certificates is critical for maintaining data integrity and confidentiality.
Mitigation strategies primarily involve updating the Google Chrome installation to version 154.0.8037.92 or later, which includes patches that correct the rendering logic within the TabStrip component to prevent unauthorized overlaying of UI elements. Organizations should enforce automated patch management policies to ensure all endpoints are running supported versions of the browser. Additionally, users can be educated on verifying URL consistency and checking for security indicators manually rather than relying solely on visual cues provided by potentially compromised interfaces. Implementing Content Security Policy headers that restrict framing and embedding can also reduce the attack surface by preventing malicious pages from being loaded in contexts where they might attempt to manipulate UI layers effectively. Regular audits of browser configurations and adherence to baseline security standards help maintain resilience against such deceptive techniques.