CVE-2026-113334 in Chrome
Summary
by MITRE • 10/21/2026
Improper input validation in ANGLE in Google Chrome on on Windows prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified within the ANGLE graphics library component of Google Chrome represents a critical failure in input validation mechanisms that are fundamental to maintaining browser integrity and user safety. ANGLE, which serves as the translation layer between web applications and native GPU APIs such as OpenGL ES or Vulkan, processes complex graphical instructions derived from HTML pages containing JavaScript and WebGL content. The specific flaw involves an improper handling of inputs where the application fails to adequately verify the structure, bounds, or type of data received before processing it for rendering operations. This deficiency allows a remote attacker to craft malicious web content that exploits this gap in validation logic. When a user visits a specially constructed HTML page hosted by an adversary, the browser's renderer process accepts and processes these malformed inputs without triggering appropriate error checks or boundary validations.
From a technical perspective, this improper input validation leads to memory corruption within the context of the graphics processing pipeline. Because ANGLE operates at a low level close to hardware interfaces, errors in data handling can result in buffer overflows or use-after-free conditions that propagate beyond the immediate scope of the graphical operation. The severity is compounded by the fact that modern browsers utilize sandboxing techniques to isolate different processes and limit the potential damage of any single compromise. However, vulnerabilities within core libraries like ANGLE often possess sufficient privilege escalation capabilities to break out of these restrictive environments. In this instance, the crafted HTML page exploits the validation gap to execute arbitrary code inside the browser's sandboxed environment, effectively bypassing security boundaries designed to prevent unauthorized system access.
The operational impact of this vulnerability is severe due to its potential for remote code execution without user interaction beyond visiting a webpage. An attacker can leverage this flaw to install malware, steal sensitive data such as cookies and session tokens, or establish persistent backdoors on the victim's machine. The classification by Chromium security teams as High severity reflects the ease with which an exploit could be developed and the significant risk it poses to end-users who browse untrusted content. This type of attack vector is particularly dangerous because it does not require user interaction beyond navigation, making social engineering or drive-by download tactics highly effective in delivering the malicious payload.
In terms of industry standards, this vulnerability aligns with CWE-20 Improper Input Validation and potentially CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer if memory corruption is involved. From an offensive security perspective, it maps to MITRE ATT&CK techniques related to Initial Access via Spearphishing Link or Drive-by Compromise, specifically leveraging browser vulnerabilities for code execution. The exploitation path demonstrates how weaknesses in foundational libraries can undermine broader application-level security controls like sandboxing.
Mitigation strategies primarily involve the immediate deployment of software updates provided by Google Chrome that address this specific input validation flaw within ANGLE. Administrators and users should ensure their browsers are updated to version 156.0.8078.47 or later where these checks have been reinforced. Additionally, organizations can implement browser hardening policies such as disabling JavaScript in untrusted zones or using extensions that restrict WebGL access for unknown domains to reduce the attack surface. Continuous monitoring of web content and employing strict Content Security Policies further help mitigate risks associated with rendering engine vulnerabilities by limiting what scripts and resources can interact with the graphics subsystem.