CVE-2026-11175 in Chrome
Summary
by MITRE • 06/05/2026
Incorrect security UI in Messages in Google Chrome on Android prior to 149.0.7827.53 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 • 06/05/2026
This vulnerability represents a critical UI spoofing flaw in the Android version of Google Chrome browser prior to version 149.0.7827.53, where the security user interface elements fail to properly validate or render when processing maliciously crafted HTML content. The issue stems from insufficient input sanitization and validation mechanisms within the browser's message handling system, allowing remote attackers to manipulate the visual presentation of security warnings and alerts. The vulnerability specifically affects the Messages component of Chrome on Android platforms, where the browser's security UI elements become compromised during the rendering of malicious web content.
The technical exploitation occurs when a remote attacker crafts a specially designed HTML page that manipulates the browser's security user interface rendering engine. This allows the attacker to overlay malicious content over legitimate security warnings, potentially deceiving users into interacting with fraudulent interfaces. The flaw enables attackers to create convincing fake security prompts or warnings that appear to originate from the browser itself, exploiting the trust users place in native security interfaces. This vulnerability falls under the CWE-693 category of Protection Mechanism Failure, specifically relating to inadequate validation of user interface elements.
The operational impact of this vulnerability extends beyond simple deception as it can facilitate more sophisticated attacks including phishing attempts, credential theft, and malware distribution. Users may be misled into believing they are interacting with legitimate browser security features while actually engaging with malicious content. The medium severity classification reflects the potential for significant user deception and the ability to bypass security awareness mechanisms that users typically rely upon. Attackers can leverage this flaw to create convincing social engineering campaigns that exploit the browser's security UI as a vector for more serious attacks.
Mitigation strategies should focus on immediate patching of the affected Chrome versions to ensure users are protected against this UI spoofing vulnerability. Organizations should implement network-level monitoring to detect and block suspicious HTML content that attempts to exploit this vulnerability. Browser security teams should enhance input validation mechanisms and implement additional sandboxing measures for UI rendering components. The vulnerability highlights the importance of maintaining robust security boundaries between different browser components and demonstrates the need for comprehensive security testing of user interface elements. Users should be educated about the importance of verifying security warnings and avoiding interaction with suspicious prompts, while organizations should consider implementing additional security layers such as content filtering solutions to prevent exploitation of this class of vulnerability.