CVE-2026-17732 in Chrome
Summary
by MITRE • 07/30/2026
Inappropriate implementation in SVG 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: Medium)
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 07/30/2026
This vulnerability represents a cross-origin resource sharing issue within Google Chrome's SVG rendering engine that existed prior to version 151.0.7922.72. The flaw stems from an inadequate implementation of SVG element handling that fails to properly enforce cross-origin restrictions when processing crafted HTML content containing embedded or referenced SVG graphics. The vulnerability classifies under CWE-200, which specifically addresses "Information Exposure Through Output Encoding" and relates to improper handling of cross-origin data access. Attackers could exploit this weakness by constructing malicious HTML pages that leverage SVG elements to bypass normal browser security boundaries, potentially accessing sensitive data from different origins without proper authorization.
The technical execution of this attack involves crafting HTML content that includes SVG markup designed to trigger the flawed rendering path within Chrome's browser engine. When the browser processes such content, the SVG parser fails to adequately validate or restrict access to resources originating from different domains, allowing malicious scripts to extract cross-origin information. This represents a classic example of a cross-origin data leakage vulnerability where the security boundary between different web origins is improperly enforced. The Chromium security team categorized this issue as medium severity, indicating that while it does not provide direct code execution capabilities, it enables unauthorized data access that could lead to information disclosure attacks.
The operational impact of this vulnerability extends beyond simple data leakage, as it could enable attackers to gather sensitive information about users' browsing activities, session data, or other cross-origin resources that should normally be protected by the browser's same-origin policy. This type of vulnerability directly violates fundamental web security principles established in the browser security model and could potentially facilitate more sophisticated attacks when combined with other exploitation techniques. The issue demonstrates a failure in Chrome's content security implementation specifically related to SVG processing, where the renderer does not properly isolate cross-origin resources during the parsing and rendering phases.
Mitigation strategies for this vulnerability require immediate updates to Chrome browsers to version 151.0.7922.72 or later, which contains the necessary patches to correct the SVG handling implementation. Organizations should also implement additional network-level protections such as content security policy headers that restrict cross-origin resource access and monitor for suspicious SVG content in web applications. The fix likely involves strengthening the validation logic within Chrome's SVG parser to ensure proper enforcement of cross-origin restrictions during rendering operations, aligning with ATT&CK technique T1566.001 which covers "Phishing: Spearphishing Attachment" where such vulnerabilities could be exploited through malicious email attachments containing crafted HTML content. Security teams should also consider implementing web application firewalls that can detect and block suspicious SVG patterns that might indicate exploitation attempts, while maintaining awareness of similar vulnerabilities in other browser implementations that may present analogous cross-origin data leakage risks.