CVE-2026-110913 in Chrome
Summary
by MITRE • 10/16/2026
Memory corruption in DOM in Google Chrome prior to 155.0.8059.84 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 • 10/16/2026
The vulnerability described involves a critical memory corruption flaw within the Document Object Model implementation of Google Chrome, specifically affecting versions prior to 155.0.8059.84. This defect represents a significant failure in input validation and memory management routines that handle HTML parsing and rendering processes. When a user navigates to a maliciously crafted webpage containing specially constructed HTML elements or scripts, the browser's engine fails to properly manage allocated memory buffers associated with DOM nodes. This oversight leads to conditions such as heap buffer overflows or use-after-free scenarios, where data is written beyond the boundaries of intended memory regions or accessed after it has been freed by the system. Such memory corruption errors are among the most dangerous classes of software vulnerabilities because they can fundamentally alter the control flow of the executing program, allowing an attacker to inject and execute arbitrary code within the context of the browser process.
From a technical perspective, this flaw exploits the complex interaction between JavaScript execution engines and DOM manipulation APIs. The Document Object Model serves as the structural representation of web pages, enabling dynamic updates via scripts. When parsing malformed or adversarial HTML content, Chrome’s rendering engine encounters edge cases where internal data structures are not correctly synchronized with memory allocation states. This discrepancy allows an attacker to corrupt adjacent memory segments, potentially overwriting function pointers or object headers that dictate program behavior. By carefully crafting the payload, a remote attacker can achieve arbitrary code execution within the browser's sandboxed environment. Although Chrome employs multiple layers of security mitigations such as site isolation and sandboxing to limit the impact of exploits, successful exploitation of this vulnerability could allow an attacker to escape these restrictions or perform actions with elevated privileges relative to other web content, thereby compromising user privacy and system integrity.
The operational impact of this vulnerability is severe due to its remote exploitability via a simple webpage visit, requiring no additional interaction from the victim beyond loading the malicious page. This characteristic aligns with common attack vectors observed in drive-by download campaigns where adversaries host exploits on compromised or malicious websites waiting for unsuspecting visitors. The ability to execute arbitrary code inside the sandbox means that an attacker could potentially install malware, steal sensitive data such as cookies and session tokens, or use the browser as a pivot point for further network intrusion. Given the widespread adoption of Chrome across enterprise and consumer environments, this vulnerability poses a substantial risk to global information security infrastructure if left unpatched. The Chromium project has classified this issue with high severity, reflecting its potential for exploitation in real-world scenarios and the critical nature of maintaining browser integrity against memory corruption attacks.
To mitigate the risks associated with this vulnerability, organizations and individual users must ensure that Google Chrome is updated to version 155.0.8059.84 or later immediately upon availability. This patch addresses the underlying memory management errors in the DOM implementation, preventing the specific conditions required for exploitation. In addition to applying vendor-provided updates, security administrators should enforce strict browser update policies within their environments to minimize exposure windows. Furthermore, implementing defense-in-depth strategies such as application whitelisting and restricting script execution on untrusted domains can reduce the likelihood of successful exploitation even if a zero-day vulnerability were present. Monitoring for anomalous network traffic or process behavior originating from Chrome processes may also aid in detecting attempted exploits in real-time.
This incident underscores the importance of rigorous memory safety practices in web browser development, particularly when handling dynamic content like HTML and JavaScript. The flaw maps to CWE-120 Buffer Copy without Checking Size of Input Classic Buffer Overflow and potentially CWE-416 Use After Free depending on the specific manifestation within the DOM engine. From a threat intelligence perspective, this vulnerability aligns with MITRE ATT&CK technique T1059 Command and Scripting Interpreter through JavaScript, as well as T1203 Malicious Software Execution via browser-based delivery mechanisms. Continuous monitoring of Chromium security advisories and proactive patch management remain essential components of an effective cybersecurity posture against such high-severity memory corruption vulnerabilities.