CVE-2026-17902 in Chrome
Summary
by MITRE • 07/30/2026
Inappropriate implementation in Editing in Google Chrome on Linux 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
This vulnerability represents a cross-origin data leakage issue within the editing functionality of google chrome browser on linux systems. The flaw stems from inadequate implementation of cross-origin resource sharing controls during html content editing operations, allowing malicious actors to exploit this weakness through carefully constructed web pages. The vulnerability specifically affects chrome versions prior to 151.0.7922.72 and demonstrates a low severity classification according to chromium security standards, though the potential for data exposure remains significant.
The technical nature of this vulnerability involves improper handling of cross-origin requests within the browser's editing components. When users interact with html content through chrome's editing features, the browser should enforce strict origin policies to prevent unauthorized access to resources from different domains. However, the implementation flaw allows crafted html pages to bypass these security mechanisms and extract sensitive information from other origins. This type of vulnerability typically falls under the category of cross-site scripting or cross-origin resource sharing misconfigurations as classified by cwe standards.
The operational impact of this vulnerability extends beyond simple data leakage, potentially enabling attackers to gather sensitive user information, session tokens, or other confidential data from different web origins. Attackers can construct malicious html pages that leverage the editing functionality to probe cross-origin resources and extract information that should normally be restricted. This capability undermines fundamental web security principles and could lead to privacy violations or further exploitation if combined with other vulnerabilities. The low severity classification does not diminish the risk to user privacy and data protection.
Mitigation strategies for this vulnerability primarily involve updating to chrome version 151.0.7922.72 or later where the implementation has been corrected. system administrators should prioritize deployment of this update across all affected linux systems running chrome browser. organizations should also implement additional monitoring for suspicious html content and maintain awareness of emerging threats related to cross-origin data leakage. the fix likely addresses the specific edge cases in the editing component's handling of cross-origin requests while maintaining proper security boundaries between different web origins. security teams should consider this vulnerability as part of broader cross-origin security assessments and ensure comprehensive testing of browser functionality that interacts with external resources.
This vulnerability highlights ongoing challenges in implementing secure cross-origin communication within modern browsers, particularly in specialized components like editing interfaces where the complexity of resource management increases attack surface. The issue demonstrates how seemingly minor implementation details in browser components can create significant security risks when proper origin isolation is not maintained during content manipulation operations.