CVE-2026-15127 in Chrome
Summary
by MITRE • 07/09/2026
Inappropriate implementation in WebGL in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 07/09/2026
This vulnerability represents a critical cross-site scripting flaw in the WebGL graphics rendering component of Google Chrome browsers. The issue stems from an inadequate input validation mechanism within the WebGL implementation that fails to properly sanitize user-supplied data when processing graphics commands. Attackers could exploit this weakness by crafting malicious HTML pages that contain specially formatted WebGL commands designed to bypass security restrictions. The vulnerability specifically affects Chrome versions prior to 150.0.7871.115, indicating a window of exposure during which users were susceptible to unauthorized script execution. This type of vulnerability falls under the category of Universal Cross-Site Scripting (UXSS) as defined by CWE-79, where malicious scripts can be injected into web pages viewed by other users without proper sanitization. The attack vector leverages the WebGL API's ability to process graphics commands that could contain embedded malicious code, which then executes in the context of the victim's browser session.
The technical exploitation of this vulnerability occurs through the manipulation of WebGL rendering contexts where legitimate graphics operations are combined with malicious payload injection. When a user visits a compromised webpage containing crafted WebGL content, the browser processes these commands without sufficient validation, allowing attacker-controlled scripts to be executed within the same security domain as legitimate web content. This creates a persistent threat vector that can be used for session hijacking, data theft, or further exploitation of the victim's browser environment. The vulnerability demonstrates poor separation between trusted and untrusted input processing within the WebGL subsystem, which violates fundamental security principles outlined in the OWASP Top Ten and NIST cybersecurity frameworks. The Chromium security severity classification as High reflects the potential for significant damage when attackers leverage this flaw to gain unauthorized access to user sessions.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable sophisticated attacks including credential theft, browser fingerprinting, and redirection to malicious sites. Users who browse compromised websites are at risk of having their session cookies, personal information, or device credentials compromised without their knowledge. The vulnerability affects all users running affected Chrome versions regardless of their security awareness or protective measures, making it particularly dangerous in enterprise environments where user behavior may be less predictable. Attackers could potentially use this vulnerability to create persistent backdoors within browser sessions or to escalate privileges through additional exploitation chains that leverage the broad access granted by successful UXSS attacks. This flaw represents a significant breach in the browser's security model and demonstrates the critical importance of input validation in graphics processing APIs.
Mitigation strategies for this vulnerability should focus on immediate patch deployment to update Chrome browsers to version 150.0.7871.115 or later, which contains the necessary code fixes to properly validate WebGL input parameters. Organizations should implement comprehensive browser security policies that include automatic update mechanisms and regular security assessments of web applications. Additional protective measures may include content security policy (CSP) enforcement, web application firewalls, and user education about avoiding suspicious websites. Security teams should monitor for exploitation attempts through network traffic analysis and browser telemetry data to detect potential attacks targeting this vulnerability. The fix implemented by Google addresses the core validation issue in the WebGL implementation and aligns with standard security practices for preventing cross-site scripting vulnerabilities as outlined in the OWASP Secure Coding Practices and MITRE ATT&CK framework's web application attack patterns. Regular security audits of graphics rendering components should be conducted to identify similar validation gaps that could lead to comparable vulnerabilities in other browser features or web technologies.