CVE-2026-118337

Received Received - Intake

Improper Access Control in Google Chrome

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: Chrome

Description

Improper access control in Forms in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-27

Last Modified

2026-10-27

Generated

2026-10-28

AI Q&A

2026-10-28

EPSS Evaluated

N/A

NVD

CVE-2026-118337

EUVD

EUVD-2026-111439

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Chrome	156.0.8078.73

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper access control issue in Google Chrome's Forms feature. It allows a remote attacker to bypass the web origin policy by using a specially crafted HTML page. This means the attacker could access or interact with content from different websites than intended, potentially leading to unauthorized data access or manipulation.

Impact Analysis

If exploited, this vulnerability could allow attackers to access sensitive data from other websites you visit, perform actions on your behalf without consent, or steal login credentials. It may also enable phishing attacks or unauthorized changes to website content while you are browsing.

Compliance Impact

This vulnerability could lead to unauthorized access or disclosure of personal data, violating GDPR's data protection principles. For HIPAA, it may risk exposure of protected health information if exploited in healthcare-related contexts. Organizations must address this to maintain compliance with these regulations.

Mitigation Strategies

Update Google Chrome to version 156.0.8078.73 or later to address the improper access control vulnerability.

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