Exposure of Sensitive Information to an Unauthorized Actor
Insufficient policy enforcement in Blink in Google Chrome prior to 77.0.3865.75 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
CWE-200 - Information Exposure
An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.