CVE-2026-113052 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in V8 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 • 10/22/2026
The vulnerability described involves a memory corruption flaw within the V8 JavaScript engine, which serves as the core runtime for Google Chrome and other Chromium-based browsers. This specific issue was addressed in version 156.0.8078.47 of Google Chrome. The root cause lies in improper handling of memory operations during the execution of JavaScript code embedded within a web page. When V8 processes certain complex or malformed scripts, it fails to correctly manage buffer boundaries or object lifecycles, leading to conditions such as use-after-free, heap overflow, or out-of-bounds access. These types of errors are particularly dangerous because they allow an attacker to manipulate the internal state of the browser's memory space in unintended ways.
From a technical perspective, this flaw is classified under CWE-120 Buffer Copy without Checking Size of Input and CWE-416 Use After Free, depending on the specific manifestation within the V8 engine. The vulnerability enables a remote attacker to execute arbitrary code by crafting a malicious HTML page that triggers the memory corruption when loaded in an affected browser version. Because modern browsers employ sandboxing mechanisms designed to isolate web content from the underlying operating system and user data, this attack is categorized with medium severity rather than critical. However, achieving arbitrary code execution within the sandboxed environment still poses significant risks, as it can serve as a stepping stone for further exploitation if additional vulnerabilities exist in browser components or if the attacker can escape the sandbox through other means such as side-channel attacks or exploits targeting renderer-to-broker communication channels.
The operational impact of this vulnerability is substantial for users who browse untrusted websites or click on links containing malicious content. An attacker could potentially install malware, steal sensitive information stored within the browser session, or use the compromised system to launch further network-based attacks. While the sandbox limits direct access to critical system files and user credentials in many scenarios, successful exploitation can still lead to data exfiltration from web applications that maintain active sessions with weak security controls. Furthermore, if combined with other vulnerabilities such as cross-site scripting flaws or insecure deserialization issues within specific websites, the impact could escalate significantly, allowing for full system compromise depending on the browser's configuration and installed extensions.
Mitigation strategies primarily involve ensuring that all instances of Google Chrome are updated to version 156.0.8078.47 or later immediately upon availability. Users should enable automatic updates where possible to reduce exposure windows. Additionally, employing defense-in-depth measures such as strict content security policies on web applications can help mitigate the impact if a user inadvertently visits a malicious site. Security professionals and organizations should also consider implementing browser isolation technologies or sandboxing solutions that further restrict the capabilities of any code executed within the browser environment. Regular monitoring for unusual network activity originating from browser processes can aid in detecting potential exploitation attempts before they result in significant damage.