CVE-2026-113141 in Chrome
Summary
by MITRE • 10/21/2026
Use after free in Transactions Platform 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: High)
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Analysis
by VulDB Data Team • 10/21/2026
The vulnerability identified as a use-after-free condition within the Transactions Platform of Google Chrome prior to version 156.0.8078.47 represents a critical memory management flaw that undermines the browser's sandboxing mechanisms. This specific class of error occurs when an application continues to use a pointer after the memory it points to has been freed, leading to undefined behavior that can be exploited by malicious actors. In this instance, the Transactions Platform, which handles sensitive financial data and interactions within the Chromium-based environment, failed to properly manage the lifecycle of certain objects in memory. When these objects were deallocated but still referenced by active processes or event handlers, it created a window of opportunity for an attacker to manipulate the heap structure.
The technical root cause lies in the improper handling of object lifecycles during transaction processing operations. The Transactions Platform likely maintained references to DOM elements or JavaScript objects that had already been garbage collected or explicitly freed due to user interaction or script execution. By crafting a specific HTML page containing malicious scripts, an attacker could trigger this sequence where memory is released but subsequently accessed through stale pointers. This access allows for arbitrary read and write operations within the browser's process space. The severity of this issue is classified as High by Chromium security standards because it directly impacts the integrity of the execution environment, potentially allowing code to run with elevated privileges or bypassing isolation boundaries designed to protect user data.
From an operational perspective, successful exploitation of this vulnerability enables a remote attacker to execute arbitrary code inside the sandboxed browser context. While modern browsers employ multiple layers of defense such as site isolation and hardware-based protections like Control Flow Integrity (CFI), a use-after-free bug provides the necessary primitive to corrupt memory structures in ways that can lead to control flow hijacking or information disclosure. An attacker could leverage this flaw to bypass security restrictions, install malware, steal sensitive credentials stored within the browser, or pivot further into a user's network if additional vulnerabilities are present. The ability to execute code via a crafted HTML page means that simply visiting a malicious website is sufficient for exploitation, requiring no user interaction beyond loading the page.
This vulnerability aligns with Common Weakness Enumeration (CWE) ID 416, which describes Use After Free scenarios where memory is accessed after it has been freed, often leading to crashes or arbitrary code execution. Furthermore, in the context of the MITRE ATT&CK framework for enterprise security, this exploit technique relates to techniques involving client-side exploitation and potentially privilege escalation within the application layer. The attack vector falls under Initial Access via Spearphishing Link if delivered through email, but more commonly as a Drive-by Compromise where users are lured to malicious sites containing the crafted HTML payload.
Mitigation strategies primarily involve updating Google Chrome to version 156.0.8078.47 or later, which includes patches for this memory management issue within the Transactions Platform. Organizations should enforce automated update policies to ensure all endpoints have the latest security fixes applied promptly. Additionally, users can mitigate risk by disabling JavaScript on untrusted sites using browser extensions or enterprise policy configurations, although this may impact usability. Security teams should also monitor network traffic and endpoint detection systems for indicators of compromise associated with known exploit kits that target Chrome vulnerabilities, ensuring rapid response to any potential breaches stemming from outdated software versions.