Inappropriate Implementation in Google Chrome Media on Windows Leads to Cross-Origin Data Leak

Publication date: 2026-05-28

Last updated on: 2026-06-01

Assigner: Chrome

Description

Inappropriate implementation in Media in Google Chrome on Windows prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-28

Last Modified

2026-06-01

Generated

2026-07-09

AI Q&A

2026-05-29

EPSS Evaluated

2026-07-08

NVD

CVE-2026-9991

EUVD

EUVD-2026-33133

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 148.0.7778.216 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability is an inappropriate implementation in the Media component of Google Chrome on Windows versions prior to 148.0.7778.216. It allows a remote attacker who has already compromised the renderer process to leak cross-origin data by using a specially crafted HTML page.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of sensitive information across different origins in the browser. An attacker who has compromised the renderer process can exploit this flaw to access data from other websites or web applications that the user has open, potentially leading to privacy breaches or data leakage.

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