CVE-2026-113224 in Chrome
Summary
by MITRE • 10/21/2026
Memory corruption in WebAppInstalls in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially read memory 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 as CVE-2023-6934 represents a critical memory corruption flaw within the WebAppInstalls component of Google Chrome for Android, specifically affecting versions prior to 156.0.8078.47. This security issue stems from improper handling of data structures during the installation and management of Progressive Web Apps or other web-based application installations initiated through browser interfaces. The root cause lies in a failure to properly validate memory boundaries or manage object lifecycles, leading to conditions such as use-after-free or heap overflow scenarios. These types of memory corruption errors are particularly dangerous because they can allow an attacker to manipulate the internal state of the browser process, potentially bypassing standard security controls that rely on strict isolation between different web contexts and system resources.
From a technical perspective, this vulnerability falls under the category of CWE-120 Buffer Copy without Checking Size of Input or CWE-416 Use After Free, depending on the specific exploitation vector utilized by the attacker. The flaw enables a remote adversary to execute arbitrary code or read sensitive information from memory within the Chrome sandbox environment. By crafting a malicious HTML page that triggers the vulnerable function during an installation process, an attacker can corrupt heap metadata or overwrite adjacent objects in memory. This corruption can lead to control flow hijacking if executable code is injected, but more commonly in this context, it facilitates unauthorized memory reads. The ability to read arbitrary memory locations inside the sandbox allows for the extraction of sensitive data such as session cookies, authentication tokens, personal user information, and potentially cryptographic keys stored within the browser's local storage or IndexedDB structures.
The operational impact of this vulnerability is significant due to its potential for remote exploitation without requiring any user interaction beyond visiting a malicious website. Although Chrome employs robust sandboxing mechanisms designed to limit the damage caused by successful exploits, memory corruption vulnerabilities can sometimes be chained with other flaws to escape these sandboxes entirely or to perform side-channel attacks that leak data across process boundaries. The severity is rated as Medium because while it allows for information disclosure and potential code execution, it typically requires a specific trigger condition related to web app installation workflows which may not be present in all browsing sessions. However, the ease of delivery via standard HTTP/HTTPS requests makes this a high-risk vector for targeted attacks or drive-by exploitation campaigns aimed at mobile users who frequently interact with web applications that install as standalone entities on their devices.
In alignment with industry standards and threat modeling frameworks, this vulnerability maps to MITRE ATT&CK technique T1059 Command and Scripting Interpreter if code execution is achieved, or more directly to data exfiltration techniques such as T1005 Data from Local System when memory reading occurs. The attack vector corresponds to Network-based exploitation where the attacker delivers a crafted payload via the web. To mitigate this risk, users must immediately update Google Chrome for Android to version 156.0.8078.47 or later, which contains patches addressing the underlying memory management errors in the WebAppInstalls module. Additionally, security administrators should enforce strict content security policies and consider deploying browser isolation solutions that limit the ability of web pages to trigger installation prompts without explicit user consent. Regular patching cycles are essential as vendors continuously address such low-level memory safety issues inherent in complex software like modern browsers which handle untrusted input from the open internet daily.