CVE-2026-121164 in Chrome
Summary
by MITRE • 11/03/2026
Incorrect authorization in Views in Google Chrome on on Mac prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 11/03/2026
The vulnerability identified as an incorrect authorization issue within the Views component of Google Chrome on macOS prior to version 157.0.8103.38 represents a significant flaw in how the browser handles access control for specific user interface elements and system interactions. This defect allows a remote attacker, who typically relies on social engineering tactics such as phishing or malicious web page hosting, to bypass critical system access restrictions. The core of this vulnerability lies in the improper enforcement of authorization checks when rendering content through the Views framework, which is responsible for drawing UI components within the Chromium-based browser architecture. When an attacker crafts a specific HTML page that exploits these misconfigured permissions, they can trigger actions or access resources that should be restricted to privileged contexts or require explicit user consent and validation.
From a technical perspective, this flaw falls under the category of improper privilege management where the application fails to correctly verify whether the executing context has sufficient rights to perform an action on behalf of the user. In the context of Chromium's Views component, which manages the lifecycle and rendering of UI elements, a failure in authorization logic can lead to unintended side effects such as accessing sensitive system APIs or manipulating window states without proper validation. The severity is classified as Medium by the Chromium security team because while it requires social engineering to initiate the attack vector, successful exploitation could allow an attacker to escalate privileges within the browser sandbox or access local resources that are normally protected from web content. This bypass of system access restrictions undermines the isolation model that browsers rely on to protect users from malicious websites.
The operational impact of this vulnerability is primarily tied to the potential for unauthorized data exposure or manipulation depending on what specific restricted functions were accessible through the flawed Views implementation. An attacker leveraging social engineering could trick a user into visiting a crafted webpage, which then exploits the authorization bypass to perform actions that mimic legitimate system operations. This might include accessing clipboard contents, manipulating window focus in ways that facilitate further attacks like clickjacking or UI redressing, or potentially interacting with native applications if the browser's sandboxing is compromised through this specific vector. The reliance on social engineering means that while the technical exploit exists, its success rate depends heavily on user awareness and behavior, making it a persistent threat in environments where users are targeted by sophisticated phishing campaigns.
To mitigate this risk, organizations and individual users must ensure that Google Chrome is updated to version 157.0.8103.38 or later, as these updates contain the necessary patches for the Views component authorization logic. Beyond software updates, implementing strict content security policies and utilizing browser extensions that restrict script execution on untrusted domains can reduce the attack surface available to social engineering attempts. Additionally, user education regarding the risks of visiting unknown websites remains a critical defense layer against this type of vulnerability. From an industry standard perspective, this issue aligns with CWE-269 Improper Privilege Management and is relevant to MITRE ATT&CK techniques involving browser exploitation for initial access or privilege escalation within the endpoint environment. Regular patch management cycles are essential to address such flaws before they can be weaponized in targeted attacks.