CVE-2026-11252 in Chrome
Summary
by MITRE • 06/05/2026
Insufficient policy enforcement in Content Settings in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to bypass discretionary access control via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 06/05/2026
This vulnerability represents a significant weakness in Chrome's content security architecture that could allow remote attackers to circumvent critical access controls through carefully crafted web content. The issue stems from inadequate policy enforcement within Chrome's content settings subsystem, specifically affecting versions prior to 149.0.7827.53. The flaw enables attackers to bypass discretionary access control mechanisms that should normally prevent unauthorized access to system resources or sensitive data within the browser environment.
The technical implementation of this vulnerability involves a failure in Chrome's security policy enforcement logic where the browser does not properly validate or enforce content access restrictions when processing malicious HTML pages. This allows an attacker to craft web content that exploits the weak policy enforcement to gain unauthorized access to resources that should be protected by discretionary access controls. The vulnerability operates at the application level within Chrome's security framework, specifically targeting the content settings component that manages access permissions for various browser features and resources.
From an operational perspective, this vulnerability presents a low severity risk but still represents a meaningful security gap that could be exploited in targeted attacks or combined with other vulnerabilities to achieve more significant compromises. The attack requires a remote HTML page to be loaded in Chrome, making it potentially exploitable through phishing campaigns or compromised websites. The impact is limited to bypassing Chrome's own access control mechanisms rather than direct system-level compromises, but it still represents an unauthorized access vector that could lead to data exposure or privilege escalation within the browser context.
The vulnerability aligns with CWE-284 which addresses improper access control issues, specifically focusing on inadequate enforcement of access control policies within software applications. From an attack framework perspective, this weakness could be categorized under ATT&CK technique T1059 for execution through web-based attacks and potentially T1566 for initial access via malicious websites. The issue demonstrates the importance of proper access control implementation in browser security models where multiple layers of protection must work cohesively to prevent unauthorized access to system resources.
Mitigation strategies should focus on immediate updates to Chrome versions 149.0.7827.53 and later, which contain the necessary patches to address the policy enforcement gap. Organizations should also implement network-level protections such as content filtering solutions and web application firewalls to provide additional defense in depth. Browser hardening measures including disabling unnecessary browser features, implementing strict content security policies, and regular security audits of web applications can help reduce the attack surface. Security monitoring should include detection of suspicious web content delivery and unauthorized access attempts to browser resources. The fix implemented by Google addresses the core policy enforcement issue by strengthening the validation mechanisms within Chrome's content settings system, ensuring that access controls are properly enforced regardless of the HTML content being processed.