CVE-2026-17928
Summary
by MITRE • 07/30/2026
Inappropriate implementation in DataTransfer in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 07/30/2026
The vulnerability in question represents an insufficient implementation flaw within the DataTransfer component of Google Chrome versions prior to 151.0.7922.72, specifically categorized under chromium security severity level low. This weakness resides in the browser's handling of cross-origin data transfer operations, creating a potential information disclosure risk that could be exploited by remote attackers through maliciously crafted web pages. The DataTransfer API is fundamental to web applications as it manages data movement between different origins during drag and drop operations, clipboard interactions, and other user interface events that involve data exchange across domain boundaries.
The technical nature of this vulnerability stems from inadequate validation and sanitization of cross-origin data within the browser's internal mechanisms. When a web page attempts to transfer data across origin boundaries, the browser should enforce strict security policies to prevent unauthorized access to sensitive information from different domains. However, in affected Chrome versions, the DataTransfer implementation failed to properly isolate or validate data originating from different origins, allowing malicious actors to craft HTML pages that could capture and exfiltrate cross-origin data through seemingly benign user interaction patterns. This flaw particularly affects the browser's ability to maintain proper separation between different security contexts during data transfer operations.
The operational impact of this vulnerability extends beyond simple information leakage, as it represents a potential vector for more sophisticated attacks targeting user privacy and application security. Attackers could leverage this weakness to construct malicious web pages that appear legitimate while silently collecting cross-origin data from users' browsing sessions. The low severity classification does not diminish the practical implications since even minor information disclosure vulnerabilities can be combined with other attack vectors to create more significant threats. Users accessing compromised websites could unknowingly expose sensitive data from their browser sessions, including potentially sensitive information from other domains they have visited or interacted with.
The vulnerability aligns with common weakness enumerations such as CWE-200, which addresses "Information Exposure," and relates to broader security principles found in the ATT&CK framework under techniques involving information gathering and credential access. Organizations should implement immediate mitigation strategies including prompt browser updates to versions 151.0.7922.72 or later, which contain the necessary patches to address the DataTransfer implementation flaw. Additionally, administrators should monitor for suspicious web traffic patterns and consider implementing content security policies that restrict cross-origin data transfer operations where possible. Regular security assessments of browser configurations and user access controls can help minimize potential exploitation risks while maintaining operational functionality within enterprise environments.