CVE-2026-113315 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in ANGLE in Google Chrome 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, which is integrated into Google Chrome prior to version 156.0.8078.47, represents a critical memory corruption flaw that undermines the browser's sandboxing mechanisms. ANGLE serves as an abstraction layer for OpenGL ES and WebGL implementations on various operating systems, translating high-level graphics commands into native API calls such as DirectX or Metal. When this component processes malformed input from web content, it fails to properly validate data structures or bounds during memory allocation and access operations. This oversight allows a remote attacker who hosts a specially crafted HTML page containing malicious JavaScript and WebGL shaders to trigger an out-of-bounds write or use-after-free condition within the browser's process space. The severity of this issue is classified as High by Chromium security teams because it directly impacts the integrity of the execution environment, potentially allowing code execution that bypasses standard web isolation boundaries.
From a technical perspective, memory corruption vulnerabilities in graphics libraries are particularly dangerous due to their complexity and the frequency with which they handle untrusted data derived from user interactions or remote content rendering engines. In this specific instance, the flaw likely stems from improper handling of shader programs or texture buffers where input validation is insufficient. When the browser attempts to render a maliciously constructed scene, the ANGLE library may write data beyond the allocated memory buffer or access freed memory regions that have not been properly zeroed out. This can lead to arbitrary code execution if an attacker can control the contents written to these corrupted memory locations. The attack vector is remote and requires user interaction in the form of visiting a malicious webpage, which aligns with common exploitation patterns for browser-based threats where social engineering or drive-by download tactics are employed to deliver the payload.
The operational impact of this vulnerability extends beyond simple data leakage; it poses a significant risk to system compromise if the sandbox escape is successful. Although Chrome employs multiple layers of defense including site isolation, job objects on Windows, and seccomp-bpf filters on Linux, a memory corruption flaw in ANGLE can potentially allow an attacker to break out of these restrictions under certain conditions. If exploited effectively, this could lead to full system compromise, allowing the installation of malware, exfiltration of sensitive data stored locally by the browser such as cookies or passwords, and further lateral movement within a network environment. The existence of such vulnerabilities highlights the inherent risks in complex software stacks where low-level memory management interacts with high-level web standards like WebGL.
To mitigate this risk, users must ensure that Google Chrome is updated to version 156.0.8078.47 or later as soon as possible. This update contains patches for the underlying ANGLE library components responsible for handling graphics operations securely. Additionally, organizations should enforce strict browser update policies across all endpoints to minimize exposure windows. Security administrators can also consider implementing content security policies that restrict the execution of inline scripts and limit WebGL capabilities where not strictly necessary, although this may impact legitimate web applications relying on hardware-accelerated graphics. Monitoring network traffic for unusual outbound connections following visits to untrusted sites can provide an additional layer of detection for potential exploitation attempts.
This vulnerability is categorized under CWE-120 Buffer Copy without Checking Size of Input and CWE-416 Use After Free, reflecting the nature of memory corruption issues prevalent in C++ based graphics libraries. In terms of adversary tactics, this aligns with ATT&CK technique T1203 Exploitation for Client Execution, where attackers leverage vulnerabilities in client-side software to execute malicious code on a victim's machine. The reliance on user interaction via a crafted HTML page places it within the broader context of web-based attacks that target browser engines and their associated components. Continuous monitoring of vulnerability databases and prompt application of security patches remain the most effective strategies for defending against such exploits, as patching addresses the root cause before attackers can develop reliable proof-of-concept code or deploy widespread campaigns targeting unpatched systems.