CVE-2026-19170 in Chrome
Summary
by MITRE • 08/07/2026
Use after free in WebGL in Google Chrome on Android prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)
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Analysis
by VulDB Data Team • 08/07/2026
This vulnerability represents a critical use-after-free flaw in the WebGL implementation within Google Chrome's Android browser, specifically affecting versions prior to 151.0.7922.109. The issue stems from improper memory management during WebGL context operations where freed memory regions are accessed after being deallocated, creating potential exploitation vectors for remote attackers. The vulnerability is categorized under CWE-416 as a use-after-free condition that occurs in the graphics rendering subsystem, specifically within the WebGL API implementation.
The technical exploitation of this vulnerability involves crafting a malicious HTML page that triggers specific WebGL operations leading to memory corruption. When Chrome processes WebGL commands on Android devices, certain object cleanup sequences fail to properly invalidate references, allowing an attacker to manipulate freed memory locations through carefully constructed JavaScript code. This memory corruption can potentially be leveraged to execute arbitrary code within the browser's sandboxed environment, bypassing security boundaries that normally isolate web content from system resources.
The operational impact of this vulnerability is severe as it enables remote code execution without user interaction, making it particularly dangerous in mobile environments where users may encounter malicious content through various attack vectors including phishing pages, compromised websites, or malicious advertisements. The sandbox escape capability means that successful exploitation could allow attackers to access device files, execute system commands, or escalate privileges beyond the typical web browser limitations. This represents a critical escalation from standard web-based attacks to potentially full device compromise.
Mitigation strategies for this vulnerability require immediate patching of Chrome browsers to versions 151.0.7922.109 or later, as provided by Google. Organizations should implement proactive security measures including network-based protections such as web application firewalls and content filtering systems that can detect and block suspicious WebGL-related activities. Browser hardening techniques should be applied including disabling unnecessary WebGL features when not required, implementing strict content security policies, and maintaining regular update schedules for all browser components. Additionally, security monitoring should be enhanced to detect anomalous JavaScript behavior patterns that might indicate exploitation attempts targeting graphics rendering subsystems.
The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter usage in exploitation scenarios, particularly when attackers leverage JavaScript within WebGL contexts to execute malicious payloads. The use-after-free nature also maps to ATT&CK technique T1203 for exploiting vulnerabilities in web browsers through memory corruption attacks. Organizations should consider implementing browser security frameworks such as the Chrome Security Architecture principles that include sandboxing mechanisms and memory protection features designed to prevent such exploitation patterns from succeeding.
From a compliance standpoint, this vulnerability demonstrates the critical importance of maintaining current security patches and adhering to industry standards like NIST SP 800-128 for mobile device security. The severity classification as Critical by Chromium's security team reflects the potential for widespread impact across Android devices where Chrome serves as the primary browser application. Security teams should prioritize this vulnerability in their risk assessment frameworks, particularly given the mobile environment's unique attack surface and the increased likelihood of successful exploitation through web-based delivery mechanisms.