CVE-2026-113331 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in Controls 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: Low)
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified as memory corruption within browser controls represents a critical flaw in Google Chrome prior to version 156.0.8078.47, specifically affecting the rendering and interaction logic of user interface elements embedded within web pages. This class of defect typically arises from improper handling of data structures associated with DOM manipulation or event processing, where boundary checks are either missing or incorrectly implemented during runtime operations. When a remote attacker crafts an HTML page containing malicious scripts designed to trigger specific edge cases in these controls, the browser may write data beyond allocated memory buffers. Such out-of-bounds writes can corrupt adjacent heap metadata or overwrite critical function pointers, leading to arbitrary code execution if the attacker successfully gains control over the instruction pointer or return address within the process context.
From a technical perspective, this flaw aligns with CWE-120 Buffer Overflow and potentially CWE-787 Out-of-Bounds Write, depending on the specific memory region affected by the corruption. The severity is classified as Low in Chromium security metrics because modern browser architectures employ multiple layers of defense-in-depth mechanisms to mitigate exploitation success rates. These include sandboxing techniques that restrict process privileges, Data Execution Prevention (DEP) which prevents code execution from data pages, and Address Space Layout Randomization (ASLR) which makes predicting memory addresses difficult for attackers. Despite these mitigations, the potential remains for a remote attacker to bypass security controls through sophisticated exploitation chains involving information disclosure vulnerabilities or heap spraying techniques to stabilize the exploit environment.
The operational impact of this vulnerability centers on the risk of unauthorized code execution within the browser's sandboxed renderer process. While successful exploitation does not immediately grant full system compromise due to the isolation provided by Chrome’s multi-process architecture, it allows an attacker to execute arbitrary commands with the privileges of the compromised renderer process. This can lead to further lateral movement if additional vulnerabilities are chained together or if specific extensions and plugins have elevated permissions that leak across sandbox boundaries. Attackers typically leverage such flaws through phishing campaigns where victims are lured into visiting maliciously crafted web pages, resulting in potential data exfiltration, session hijacking, or the installation of persistent malware payloads on the target system.
Mitigation strategies primarily involve immediate patching to version 156.0.8078.47 or later, which contains code fixes addressing the memory management errors within the affected controls. Organizations should enforce automated update policies for all endpoints running Google Chrome to ensure timely application of security patches. Additionally, users are advised to exercise caution when interacting with untrusted web content and to disable unnecessary browser extensions that may increase the attack surface. Security teams should monitor network traffic for indicators of compromise associated with known exploit kits targeting this vulnerability class and consider implementing strict Content Security Policy (CSP) headers on internal applications to restrict inline script execution, thereby reducing the likelihood of successful initial access via crafted HTML pages.