CVE-2026-79011 in Chrome
Summary
by MITRE • 08/26/2026
UI misrepresentation in Browser in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 08/26/2026
The vulnerability identified as UI misrepresentation in Google Chrome, specifically affecting versions prior to 152.0.7977.65, represents a significant class of social engineering attacks known as clickjacking or interface deception. This flaw allows an attacker to manipulate the user interface elements within the browser window to create a false sense of security or authority. By leveraging crafted HTML pages, malicious actors can overlay transparent or misleading content over legitimate UI components, effectively tricking users into interacting with controls they believe are part of a trusted application rather than the hostile webpage hosting them. The Chromium project has classified this issue with high severity due to its potential for widespread exploitation through simple web-based vectors that do not require complex code execution vulnerabilities in the browser engine itself but instead exploit human psychology and interface design flaws.
From a technical perspective, this vulnerability stems from insufficient isolation or incorrect rendering of user interface elements when handling cross-origin requests or specific CSS properties such as opacity, z-index stacking contexts, or pointer events. An attacker constructs an HTML page that loads a target site within an iframe while simultaneously overlaying deceptive visual cues. For instance, the attacker might display a fake login prompt from a banking institution over a legitimate browser window, causing the user to enter credentials into what appears to be the bank's interface but is actually controlled by the malicious script. This bypasses traditional security boundaries because the victim believes they are interacting directly with the protected system, thereby circumventing access restrictions that rely on user verification or explicit consent mechanisms.
The operational impact of this vulnerability is severe as it facilitates unauthorized access to sensitive systems and data without requiring technical exploitation of memory corruption or logic errors in the browser's core rendering engine. Attackers can use this technique for credential harvesting, session hijacking, or forcing users to perform unintended actions such as transferring funds, changing account settings, or installing malicious extensions. Since the attack relies on social engineering rather than a direct software bug that crashes the application or executes arbitrary code, it is difficult to detect using traditional signature-based intrusion detection systems. The success of the attack depends heavily on the victim's trust in the visual appearance of the browser window and their ability to distinguish between legitimate UI elements and deceptive overlays created by malicious scripts.
Mitigation strategies for this vulnerability involve both technical patches from Google and defensive practices implemented by users and administrators. Google addressed this issue in version 152.0.7977.65 by improving how the browser handles iframe embedding, pointer events, and visual stacking contexts to prevent deceptive overlays. Organizations should ensure that all Chrome instances are updated to the latest stable release to benefit from these fixes. Additionally, implementing Content Security Policy headers with strict frame-ancestors directives can restrict which domains are allowed to embed content in iframes, thereby reducing the attack surface for clickjacking attempts. Users should also be educated on verifying URL bars and looking for visual inconsistencies such as mismatched fonts or layout shifts that may indicate a UI deception attempt.
This vulnerability aligns with Common Weakness Enumeration categories related to user interface design flaws and insufficient security controls in web applications, specifically CWE-1021 Improper Restriction of Rendered UI Layers or Frames. In the context of the MITRE ATT&CK framework, this technique falls under Tactic TA0001 Initial Access and Technique T1566 Phishing, with a specific sub-technique related to Clickjacking (T1566.002). The attack vector is classified as Network-based via User Interaction, highlighting the critical role of human factors in cybersecurity defenses. Protecting against such threats requires a layered security approach that combines up-to-date software patches, robust content security policies, and continuous user awareness training to recognize sophisticated social engineering tactics designed to bypass system access restrictions through visual deception.