CVE-2026-11232 in Chrome
Summary
by MITRE • 06/05/2026
Inappropriate implementation in TabGroups in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to perform UI spoofing via malicious network traffic. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 06/05/2026
The vulnerability in question affects the TabGroups feature within Google Chrome browsers prior to version 149.0.7827.53, representing a UI spoofing attack vector that exploits improper implementation of user interface elements. This security flaw falls under the category of insufficient input validation and user interface security controls, which can be categorized as CWE-602 Client-side URL Redirect and CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component. The vulnerability enables remote attackers to manipulate the browser's tab group interface through malicious network traffic, potentially deceiving users into interacting with fraudulent content.
The technical implementation flaw stems from inadequate validation of tab group data received from network sources, allowing attackers to inject malicious content that appears legitimate within the browser's user interface. This weakness specifically impacts how Chrome handles tab group representations and their associated metadata, creating opportunities for attackers to craft deceptive user interface elements that mimic legitimate browser functionality. The vulnerability operates at the application layer, leveraging the browser's trust in locally rendered content while failing to properly verify the authenticity of data originating from external sources.
Operationally, this UI spoofing vulnerability presents a significant risk to user security and trust within the browser environment. Attackers can exploit this flaw to create fake tab groups that appear genuine, potentially leading to phishing attacks where users are deceived into entering credentials or sensitive information on malicious sites. The low severity classification does not diminish the potential impact on user experience and security awareness, as users may unknowingly interact with compromised tab group interfaces. This vulnerability can be particularly dangerous when combined with other social engineering techniques, as it leverages the browser's trusted interface to execute malicious activities.
The recommended mitigations include immediate upgrade to Chrome version 149.0.7827.53 or later, which implements proper input validation and sanitization for tab group data. Organizations should also implement network monitoring to detect unusual tab group traffic patterns and consider user education about recognizing potential UI spoofing attempts. Security teams should review browser security configurations and ensure that automatic updates are enabled to maintain protection against similar vulnerabilities. Additionally, implementing network segmentation and content filtering can provide additional layers of defense against exploitation attempts targeting browser interface components.
From an ATT&CK framework perspective, this vulnerability maps to techniques such as T1566.001 Phishing and T1059.001 Command and Scripting Interpreter, as it enables attackers to craft deceptive user interfaces that facilitate social engineering attacks. The vulnerability represents a client-side attack vector that leverages browser trust models, aligning with T1211 Lateral Movement through compromised user interfaces. Organizations should consider this vulnerability when conducting security assessments and implementing browser hardening policies, particularly in environments where users may be exposed to untrusted network traffic. The remediation process should include verifying that tab group functionality properly validates all external data inputs and implements appropriate security controls to prevent unauthorized interface manipulation.