CVE-2026-19174 in Chrome
Summary
by MITRE • 08/07/2026
Integer overflow in V8 in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 08/07/2026
This vulnerability represents a critical integer overflow condition within the V8 JavaScript engine used by Google Chrome, specifically affecting versions prior to 151.0.7922.109. The flaw occurs when the engine processes certain mathematical operations or array manipulations that exceed the maximum representable integer value, leading to unexpected behavior in memory allocation and handling. Such overflow conditions are particularly dangerous because they can cause memory corruption that allows attackers to manipulate program execution flow.
The technical implementation of this vulnerability involves V8's handling of integer arithmetic operations where developers may not properly validate input parameters or array bounds before performing calculations. When an integer overflow occurs during memory allocation for JavaScript objects or arrays, the system may allocate insufficient memory or overwrite adjacent memory regions. This creates opportunities for attackers to craft malicious HTML pages that trigger specific sequences of operations leading to controlled memory corruption.
From an operational perspective, this vulnerability enables remote code execution within the sandboxed environment of Chrome's renderer process, which is a significant security concern given the sandbox's intended protection boundaries. The Chromium security severity classification of High reflects the ease with which an attacker can exploit this through web-based attacks without requiring user interaction beyond visiting a malicious website. The attack vector specifically targets the JavaScript engine's memory management systems where integer overflows can be leveraged to bypass security mechanisms.
The exploitation typically involves crafting HTML content that triggers specific V8 code paths during array operations or mathematical computations, causing the integer overflow to result in controlled memory corruption. This allows attackers to potentially execute arbitrary code with the privileges of the sandboxed renderer process. The vulnerability is classified under CWE-190 as an Integer Overflow or Wraparound, which represents a well-known class of vulnerabilities that have been extensively documented in security literature and commonly exploited in browser-based attacks.
Organizations should immediately update to Chrome version 151.0.7922.109 or later to remediate this vulnerability. System administrators should also implement additional network-level protections such as web application firewalls and content filtering solutions that can detect and block known malicious patterns. The mitigation strategy should include regular security updates, browser hardening configurations, and monitoring for suspicious JavaScript behavior that might indicate exploitation attempts. This vulnerability aligns with ATT&CK technique T1059.007 for JavaScript execution and T1203 for exploitation of web applications, making it a critical target for defensive measures in enterprise security architectures.
This particular flaw demonstrates the ongoing challenges in securing modern browser engines where complex JavaScript virtual machines must balance performance optimization with memory safety. The integer overflow represents a fundamental programming error that can have cascading effects throughout the entire execution environment, highlighting the importance of robust input validation and comprehensive testing of mathematical operations in security-critical software components.