CVE-2026-17900 in Chrome
Summary
by MITRE • 07/30/2026
Inappropriate implementation in Enterprise in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a malicious file. (Chromium security severity: Low)
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Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents an insecure implementation flaw within Google Chrome's enterprise management framework on Windows systems, specifically affecting versions prior to 151.0.7922.72. The issue stems from inadequate cross-origin resource handling that permits unauthorized data leakage through malicious file manipulation. The vulnerability classification as low severity by Chromium security team indicates it does not directly compromise system integrity or execute arbitrary code, yet it presents significant privacy risks through information disclosure.
The technical implementation flaw manifests in how Chrome's enterprise management components process and validate cross-origin requests when handling malicious files. This allows remote attackers to exploit the gap in origin validation mechanisms to access data from different origins than intended. The vulnerability specifically impacts Windows deployments where enterprise management features are enabled, creating a potential attack vector through crafted file delivery methods that bypass normal security boundaries.
Operationally, this vulnerability enables attackers to perform cross-origin data leakage attacks by tricking users into opening malicious files that exploit the enterprise management framework's insufficient validation processes. The impact extends beyond simple information disclosure as it could potentially expose sensitive enterprise data, user credentials, or internal network information depending on the targeted environment and access levels. Attackers might leverage this weakness in conjunction with social engineering tactics to gain unauthorized access to cross-origin resources within enterprise networks.
The mitigation strategy involves updating to Chrome version 151.0.7922.72 or later where Google has implemented proper cross-origin validation mechanisms. Organizations should also implement network-level protections including web application firewalls and content filtering systems that can detect and block suspicious file downloads. Additionally, security teams should monitor for unusual enterprise management activity patterns that might indicate exploitation attempts. This vulnerability aligns with CWE-200 (Information Exposure) and could potentially map to ATT&CK technique T1566 (Phishing) when used as part of initial access vectors, though it primarily represents a data leakage mechanism rather than direct execution capability.
The enterprise management framework's design should incorporate stricter origin validation protocols and implement proper sandboxing controls to prevent cross-origin data access violations. Security configurations should disable unnecessary enterprise features when not required and maintain regular patch management schedules to address such vulnerabilities promptly. Organizations relying on Chrome's enterprise features must ensure comprehensive testing of updates before deployment to verify that security enhancements do not introduce compatibility issues with existing enterprise workflows.
This vulnerability demonstrates the importance of proper cross-origin resource sharing implementations in browser-based enterprise management systems and highlights the need for continuous security assessment of enterprise-specific browser features. The low severity classification should not diminish its potential impact on privacy-sensitive environments where data leakage could lead to significant business disruption or regulatory compliance violations.