Chrome 148 Cross-Origin Data Leak via Malicious HTML

Publication date: 2026-05-20

Last updated on: 2026-06-05

Assigner: Chrome

Description

Insufficient validation of untrusted input in Input in Google Chrome on prior to 148.0.7778.179 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-20

Last Modified

2026-06-05

Generated

2026-06-30

AI Q&A

2026-05-20

EPSS Evaluated

2026-06-28

NVD

CVE-2026-9124

EUVD

EUVD-2026-31174

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 148.0.7778.178 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability involves insufficient validation of untrusted input in Google Chrome versions prior to 148.0.7778.179. 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 exploiting this flaw could leak data from other websites or web applications that the user has open, potentially exposing private or confidential information.

Hi! I’m here to help you understand CVE-2026-9124. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70