CVE-2026-11214
Summary
by MITRE • 06/05/2026
Inappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 06/05/2026
This vulnerability represents a cross-origin data leakage issue affecting Google Chrome for iOS versions prior to 149.0.7827.53, constituting a medium severity concern within the Chromium security framework. The flaw stems from inadequate implementation of cross-origin resource sharing controls and security boundaries within the mobile browser's rendering engine. Attackers could exploit this weakness by crafting malicious HTML pages that leverage specific browser behaviors to access data from different origins without proper authorization. The vulnerability specifically targets the iOS variant of Chrome, indicating potential platform-specific implementation gaps in the browser's security architecture.
The technical execution of this attack involves manipulating the browser's cross-origin isolation mechanisms through carefully constructed web content that exploits how Chrome for iOS handles resource loading and security context boundaries. This type of vulnerability falls under the broader category of cross-site scripting and data leakage issues, with potential implications for user privacy and data confidentiality. The flaw demonstrates a failure in the browser's security model to properly enforce origin-based access controls, allowing unauthorized data retrieval across different web domains. Such implementations typically relate to CWE-200, which covers exposure of sensitive information, and may also connect to CWE-94, concerning improper control of generation of code.
The operational impact of this vulnerability extends beyond simple data leakage, potentially enabling attackers to gather sensitive information from users' browsing sessions across different websites. This could include session tokens, personal data, or other confidential information that should remain isolated between different origins. The medium severity classification indicates that while the vulnerability does not allow for arbitrary code execution or complete system compromise, it still presents a meaningful risk to user privacy and security. The iOS-specific nature of the issue suggests that mobile browser security implementations may have different attack surfaces compared to desktop versions, highlighting the importance of platform-specific security testing.
Mitigation strategies should focus on updating to Chrome version 149.0.7827.53 or later, which contains the necessary security patches addressing the cross-origin data leakage vulnerability. Organizations should also implement network-level monitoring to detect unusual data access patterns that might indicate exploitation attempts. Browser security configuration reviews should emphasize proper cross-origin resource sharing policies and ensure that security boundaries are properly enforced. The vulnerability underscores the importance of continuous security updates and the need for comprehensive testing of mobile browser implementations against known attack patterns. Security teams should also consider implementing additional monitoring and alerting mechanisms to detect potential exploitation attempts targeting similar cross-origin issues. This incident highlights the ongoing challenge of maintaining secure cross-origin communication boundaries in modern web browsers, particularly in mobile environments where additional security constraints may apply.