CVE-2026-113275 in Chrome
Summary
by MITRE • 10/21/2026
Use after free in API 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 as a use-after-free condition within the application programming interface of Google Chrome prior to version 156.0.8078.47 represents a critical memory management error that compromises the integrity of the browser's execution environment. This specific flaw arises when the software continues to reference a memory block after it has been freed, leading to undefined behavior during runtime operations. In the context of modern web browsers, such errors are particularly dangerous because they can be triggered by maliciously crafted content delivered over standard network protocols. The presence of this vulnerability indicates that an attacker could manipulate the state of allocated objects in ways that bypass expected safety checks, potentially allowing for arbitrary code execution within the browser's sandboxed process space.
From a technical perspective, use-after-free vulnerabilities occur when a pointer to dynamically allocated memory is not properly invalidated after the memory has been released back to the system or reused by another allocation request. When an application attempts to access this dangling pointer, it may read stale data that can be controlled by an attacker or write to arbitrary locations in memory if the freed block is reallocated for malicious purposes. In Google Chrome, which relies heavily on complex JavaScript engines and rendering pipelines, such a flaw could allow an adversary to corrupt internal structures used for security enforcement mechanisms like sandbox boundaries. By carefully crafting HTML pages that exploit this timing issue, an attacker can achieve precise control over memory layout, facilitating the execution of arbitrary code with the privileges granted to the browser process rather than requiring escalation beyond the initial sandbox boundary.
The operational impact of this vulnerability is significant due to its potential for remote exploitation without user interaction beyond visiting a malicious website. Although Chromium classifies the security severity as medium, indicating that successful exploitation might require specific conditions or limited payload capabilities, any instance of arbitrary code execution within the browser process poses a severe risk to end users. Attackers could leverage this flaw to install malware, steal sensitive credentials stored in cookies and local storage, perform phishing attacks with higher fidelity by bypassing security warnings, or pivot into internal networks if the user is connected to corporate resources through enterprise-managed browsers. The ability to execute code inside the sandbox undermines one of the primary defenses against web-based threats, making this vulnerability a high-priority concern for organizations relying on Chrome as their standard browsing platform.
Mitigation strategies primarily involve immediate patching to ensure all client systems are updated to version 156.0.8078.47 or later where these memory management issues have been resolved by the Chromium development team. Organizations should enforce automated update policies for browser deployments across endpoints to minimize exposure windows. Additionally, security teams can implement application control solutions that restrict the execution of unsigned scripts within browser contexts and deploy network-level filtering to block access to known malicious domains hosting exploit kits. Monitoring endpoint detection and response systems for anomalous process creation events following web browsing activity can also help identify potential exploitation attempts in real time.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-416, which describes use after free errors resulting from improper memory management practices. In terms of offensive security frameworks, the exploit technique corresponds to ATT&CK tactic T1203, specifically referencing exploitation for client execution where attackers leverage software vulnerabilities in applications running on target systems. The attack vector falls under remote code execution via web-based delivery mechanisms, emphasizing the importance of maintaining up-to-date browser versions and employing defense-in-depth strategies that include sandboxing, content security policies, and regular vulnerability assessments to reduce the overall attack surface against such memory corruption flaws.