CVE-2026-17972
Summary
by MITRE • 07/30/2026
Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 07/30/2026
The vulnerability identified in Google Chrome for iOS prior to version 151.0.7922.72 represents a UI spoofing flaw that emerged from inadequate implementation of security controls within the mobile browser's rendering engine. This issue stems from how Chrome for iOS handles certain HTML page elements and their presentation within the user interface, creating opportunities for malicious actors to manipulate visual elements and deceive users into believing they are interacting with legitimate web content.
The technical flaw manifests when a crafted HTML page exploits weaknesses in the browser's user interface rendering system, allowing attackers to overlay deceptive elements that appear to be part of the genuine website interface. This vulnerability specifically affects the iOS version of Chrome due to platform-specific implementation details and the unique security model employed by Apple's mobile operating system. The issue resides in how the browser processes and displays web content, particularly in scenarios involving dynamic content loading and interface element management.
From an operational perspective, this UI spoofing capability enables remote attackers to conduct phishing attacks by creating convincing facsimiles of legitimate websites or application interfaces. Users may be tricked into entering sensitive information or performing actions they would not normally undertake when presented with deceptive visual interfaces that appear authentic to the untrained eye. The low severity classification from Chromium indicates that while the vulnerability exists, its exploitation requires specific conditions and does not typically lead to complete system compromise or data theft.
The vulnerability aligns with CWE-611 (Improper Restriction of XML External Entity Reference) and related UI security weaknesses, though it specifically targets interface rendering rather than data processing. It can be mapped to ATT&CK technique T1531 (Hide Artifacts) and T1071.001 (Application Layer Protocol: Web Protocols) as attackers leverage web technologies to create deceptive user experiences. The implementation flaw likely stems from insufficient validation of HTML elements and their visual presentation properties, particularly when dealing with dynamic content that may be manipulated by external sources.
Mitigation strategies should focus on updating to Chrome version 151.0.7922.72 or later where the vulnerability has been addressed through enhanced input validation and improved interface rendering controls. Security-conscious organizations should implement browser hardening policies and consider additional monitoring for suspicious web content. Users should be educated about recognizing potential UI spoofing attempts and maintain awareness of legitimate website appearances to reduce successful social engineering attacks. The fix likely involves strengthening the browser's security boundaries around interface element handling and implementing more robust validation mechanisms for dynamic HTML content rendering.