CVE-2026-113106 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Skia in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified involves a memory corruption flaw within the Skia graphics library, which serves as the core 2D graphics engine for Google Chrome and other Chromium-based browsers prior to version 156.0.8078.47. This component is responsible for rendering text, images, and vector graphics on web pages. The specific nature of the flaw allows a remote attacker to execute arbitrary code within the browser's sandbox environment by crafting a malicious HTML page that triggers improper memory handling during the rendering process. Although Chromium classified this issue with a medium security severity rating, its potential impact is significant because it bypasses standard isolation mechanisms designed to contain web content execution.
Memory corruption vulnerabilities typically arise from errors in how software manages dynamic memory allocation and deallocation. In the context of Skia, such flaws may stem from buffer overflows, use-after-free conditions, or integer overflow issues that occur when processing complex graphical data structures embedded within a webpage. When an attacker constructs a specially designed HTML page containing maliciously crafted graphics elements, they can manipulate these internal memory operations to corrupt critical data structures in the browser's process space. This corruption disrupts normal control flow, potentially allowing the injection and execution of arbitrary machine code at the location where the vulnerability is triggered.
The operational impact of this vulnerability extends beyond simple visual rendering errors or denial-of-service scenarios. Because the attack vector involves a crafted HTML page, it can be delivered via phishing emails, compromised websites, or drive-by downloads without requiring user interaction beyond visiting the malicious site. The critical aspect of this exploit is its ability to execute code inside the sandbox. Chrome employs a multi-process architecture where renderer processes are heavily restricted by operating system-level sandboxes to prevent access to sensitive system resources. Successfully executing arbitrary code within this confined environment represents a significant escalation, as it may allow an attacker to further probe for additional vulnerabilities that could lead to full host compromise or data exfiltration.
From a classification perspective, this vulnerability aligns with CWE-120 Buffer Copy without Checking Size of Input and CWE-787 Out-of-bounds Write, which are common sources of memory corruption in C++ based graphics libraries like Skia. In terms of the MITRE ATT&CK framework, this exploit technique falls under Tactic 6: Defense Evasion and specifically relates to techniques that bypass process isolation or sandboxing mechanisms. The ability to execute code within a restricted environment is often categorized under privilege escalation vectors if it leads to breaking out of the renderer process into higher-privileged browser processes or the host operating system.
Mitigation for this vulnerability primarily relies on timely software updates. Administrators and end-users must ensure that Google Chrome is updated to version 156.0.8078.47 or later, where these memory management issues in Skia have been addressed through code patches and improved bounds checking. Additionally, organizations should enforce strict content security policies and utilize browser hardening features such as site isolation and sandboxing enhancements provided by modern Chromium builds to limit the blast radius of any successful exploitation attempt. Regular monitoring for unusual network activity or process behavior originating from renderer processes can also aid in detecting potential active exploits targeting this class of vulnerabilities before they lead to broader system compromise.