CVE-2026-17793 in Chrome
Summary
by MITRE • 07/30/2026
Inappropriate implementation in Messages in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a critical user interface spoofing flaw in the Messages application component of Google Chrome for Android platforms. The issue stems from an inadequate implementation that fails to properly validate or sanitize web content, specifically when rendering crafted HTML pages within the messaging context. The vulnerability falls under the broader category of user interface deception attacks where malicious actors can manipulate the visual presentation of web content to deceive users into believing they are interacting with legitimate interfaces.
The technical flaw manifests in how Chrome's Messages component processes and displays HTML content, particularly when handling elements that could alter the appearance or behavior of the messaging interface. This inadequate input validation creates an attack surface where remote adversaries can craft malicious HTML pages that, when rendered within the browser context, appear to modify or replace legitimate UI elements. The vulnerability specifically affects versions prior to 151.0.7922.72, indicating a targeted fix for this particular implementation weakness in the Android browser's messaging subsystem.
The operational impact of this vulnerability extends beyond simple visual deception, as it could enable sophisticated phishing attacks or social engineering campaigns where users might be misled into providing sensitive information or performing unintended actions. Attackers could potentially create convincing facsimiles of legitimate messaging interfaces, tricking users into clicking malicious links, entering credentials, or downloading harmful content. This represents a significant risk in mobile environments where users may be less vigilant about interface authenticity due to the nature of mobile browsing and messaging applications.
The security implications align with CWE-601 and CWE-79 categories, specifically addressing URL redirection vulnerabilities and cross-site scripting issues that enable UI spoofing attacks. From an ATT&CK framework perspective, this vulnerability maps to techniques involving social engineering and user interface deception, potentially supporting broader attack chains that could lead to credential theft or system compromise. The medium severity classification indicates the vulnerability requires careful consideration as it enables remote exploitation without requiring user interaction beyond visiting a malicious website.
Mitigation strategies should prioritize immediate patching of affected Chrome versions to 151.0.7922.72 or later, ensuring that all Android devices receive the security update. Organizations should implement additional network-based protections such as web filtering solutions and content inspection tools that can detect and block known malicious HTML patterns. Browser hardening measures including disabling unnecessary features, implementing strict content security policies, and maintaining updated security configurations will further reduce the risk exposure. Users should be educated about recognizing suspicious interface elements and maintaining vigilance when interacting with messaging applications, particularly in mobile environments where such attacks are increasingly sophisticated and prevalent.