CVE-2026-106217 in Chrome
Summary
by MITRE • 10/06/2026
Missing authorization in Google Lens in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified as missing authorization within Google Lens integrated into Google Chrome prior to version 155.0.8059.39 represents a significant breach in the browser's isolation mechanisms, specifically affecting the cross-origin data protection model. This flaw allows an attacker who has already achieved code execution or compromise of the renderer process to bypass standard security boundaries and access sensitive information belonging to other origins. The core technical issue lies in the insufficient validation of authorization tokens or permissions when Google Lens attempts to interact with web content. In a properly secured environment, any service operating within a sandboxed renderer process must strictly verify that it has explicit permission from the browser's security manager before accessing data outside its designated origin context. However, due to this oversight, the lens functionality proceeds with data extraction without confirming whether such access is warranted by the current user session or page state.
From an operational perspective, this vulnerability enables a remote attacker to perform cross-origin data leakage attacks against users browsing websites that utilize Google Lens features. If a victim visits a malicious webpage crafted specifically to exploit this condition, the embedded script can trigger the lens component in a way that forces it to read and exfiltrate sensitive content from other tabs or origins where the user is authenticated. This could include personal identification information, financial details, private communications, or proprietary business data stored within web applications. The severity of this impact is compounded by the fact that renderer process compromise can often be achieved through relatively common attack vectors such as drive-by downloads, malicious advertisements, or phishing campaigns targeting users to visit compromised sites.
The technical classification of this flaw aligns with CWE-269, which denotes Improper Authorization, indicating a failure in the system's ability to enforce access control policies correctly. Furthermore, within the context of the MITRE ATT&CK framework, this vulnerability facilitates techniques associated with T1057, Process Discovery, and potentially T1048, Exfiltration Over Alternative Protocol, as the attacker leverages legitimate browser components to smuggle data out of the sandboxed environment. The Chromium security team has classified this issue with a medium severity rating, reflecting its potential for widespread exploitation given the ubiquity of Chrome and Google Lens among users worldwide.
To mitigate the risks associated with this vulnerability, organizations and individual users must ensure that their browsers are updated to version 155.0.8059.39 or later immediately upon availability. This update contains patches that enforce stricter authorization checks within the lens integration layer, ensuring that cross-origin data access is denied unless explicitly permitted by the browser's security policy. Additionally, administrators should consider implementing strict Content Security Policies and disabling unnecessary extensions to reduce the attack surface for renderer process compromises. Regular auditing of web application behaviors involving third-party integrations can also help identify similar authorization flaws before they are exploited in the wild.