CVE-2026-2378 in ArcSearch
Summary
by MITRE • 03/21/2026
ArcSearch for Android versions prior to 1.12.7 could display a different domain in the address bar than the content being shown, enabling address bar spoofing after user interaction via crafted web content.
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Analysis
by VulDB Data Team • 03/27/2026
The vulnerability identified as CVE-2026-2378 represents a critical address bar spoofing issue within ArcSearch for Android applications prior to version 1.12.7. This security flaw exploits the browser's rendering behavior to present misleading domain information in the address bar while simultaneously displaying content from a different origin. The vulnerability specifically manifests when users interact with crafted web content that triggers the spoofing mechanism, creating a deceptive user experience that can be exploited for malicious purposes.
The technical implementation of this vulnerability stems from improper handling of domain validation and display logic within the browser's address bar component. When users encounter specially crafted web pages, the application fails to properly synchronize the displayed domain with the actual content being rendered. This discrepancy occurs because the browser's address bar update mechanism does not adequately validate or enforce domain consistency during user interaction scenarios. The flaw essentially allows attackers to manipulate the visual representation of the current browsing context, creating a false sense of security for users who rely on the address bar for domain verification.
From an operational impact perspective, this vulnerability poses significant risks to user security and trust. Attackers can leverage this issue to create convincing phishing attacks by displaying legitimate-looking domains while serving malicious content from different origins. Users may be deceived into believing they are visiting trusted websites when actually interacting with fraudulent content, potentially leading to credential theft, financial fraud, or malware installation. The vulnerability particularly affects mobile users who may be less vigilant about address bar verification compared to desktop users, making the attack surface more expansive.
The security implications of CVE-2026-2378 align with common attack patterns documented in the attack framework, specifically relating to user interface deception and social engineering techniques. This vulnerability can be classified under CWE-601 as URL Redirector Abuse and CWE-79 as Cross-site Scripting, as it enables attackers to manipulate user perception through crafted content. The attack vector typically involves users clicking on malicious links or visiting compromised websites that contain JavaScript or HTML elements designed to trigger the spoofing behavior. The vulnerability demonstrates how seemingly minor UI inconsistencies can create significant security risks when combined with user interaction patterns.
Mitigation strategies for this vulnerability should include immediate application updates to version 1.12.7 or later, which implements proper domain validation and address bar synchronization mechanisms. Organizations should also consider implementing additional security measures such as user education about address bar verification practices and monitoring for suspicious domain behavior. Network-level protections like content filtering systems can help detect and block known malicious domains, while browser security extensions may provide additional layers of protection. Regular security audits of mobile browser components should be conducted to identify similar UI-based vulnerabilities that could be exploited for user deception attacks. The fix for this vulnerability likely involves strengthening the validation logic that ensures address bar content matches the actual browsing context, preventing the display of misleading domain information during user interactions with web content.