CVE-2026-11230 in Chrome
Summary
by MITRE • 06/05/2026
Use after free in Extensions in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox 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 critical use-after-free condition within the extensions subsystem of google chrome browser prior to version 149.0.7827.53. the flaw occurs when the browser processes crafted html content that triggers improper memory management during extension handling operations. specifically the vulnerability manifests when an extension object is freed from memory but subsequent code attempts to access that same memory location, creating a scenario where attacker-controlled data can be manipulated to achieve arbitrary code execution within the browser's sandboxed environment.
the technical nature of this vulnerability aligns with common software security weaknesses categorized under cwe-416 use after free and cwe-119 buffer overflows or memory corruption issues. when chrome processes malicious html content containing crafted extension references, the memory management routines fail to properly track object lifecycles, allowing freed memory blocks to be reallocated and accessed by malicious code. this particular vulnerability operates at the intersection of browser extension architecture and memory safety mechanisms, exploiting the gap between extension lifecycle management and secure memory handling practices.
the operational impact of this vulnerability is significant as it allows remote attackers to bypass chrome's security model and execute arbitrary code within the sandboxed extension environment. the low chromium security severity classification does not accurately reflect the potential for privilege escalation and code execution capabilities. an attacker could craft a malicious webpage that, when visited by a victim, would trigger the vulnerable code path and enable remote code execution with the privileges of the chrome extension process. this represents a serious threat to browser security as it allows attackers to potentially escalate privileges beyond the initial sandbox boundaries.
the attack vector relies on social engineering through crafted web pages that exploit the browser's extension handling mechanisms. attackers can deliver malicious content through various means including phishing campaigns, compromised websites, or malicious advertisements. the vulnerability requires no user interaction beyond visiting the malicious page, making it particularly dangerous for widespread exploitation. the sandbox environment provides some protection, but the use-after-free condition allows attackers to potentially corrupt memory in ways that can bypass sandboxing mechanisms and execute code with elevated privileges.
mitigation strategies should focus on immediate browser updates to version 149.0.7827.53 or later, which contain patches addressing the memory management issues in the extension subsystem. organizations should implement network-based protections including web application firewalls and content filtering systems that can detect and block malicious html content. additional defensive measures include implementing strict browser extension policies, disabling unnecessary extensions, and monitoring for suspicious extension behavior. the fix typically involves proper memory management practices including reference counting, smart pointers, or garbage collection mechanisms that prevent objects from being accessed after deallocation. security teams should also consider implementing browser hardening techniques and monitoring for potential exploitation attempts through network traffic analysis and behavioral monitoring systems.