CVE-2026-106403

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in Google Chrome Accessibility

Publication date: 2026-10-06

Last updated on: 2026-10-09

Assigner: Chrome

Description

Incorrect authorization in Accessibility in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-06

Last Modified

2026-10-09

Generated

2026-10-19

AI Q&A

2026-10-06

EPSS Evaluated

2026-10-18

NVD

CVE-2026-106403

EUVD

EUVD-2026-93748

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 155.0.8059.39 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-863	The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

Executive Summary

This vulnerability involves incorrect authorization in the Accessibility feature of Google Chrome before version 155.0.8059.39. A remote attacker who already compromised the renderer process could bypass site isolation by using a specially crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 155.0.8059.39. To detect it, check your Chrome version by running chrome --version in the terminal. If the version is below 155.0.8059.39, the system is vulnerable.

Impact Analysis

If exploited, this flaw could allow an attacker to access data or perform actions on websites they should not be able to, potentially leading to unauthorized access to sensitive information or further system compromise.

Compliance Impact

This vulnerability involves incorrect authorization in Google Chrome's Accessibility feature, allowing a remote attacker to bypass site isolation via a crafted HTML page. While it does not directly impact GDPR or HIPAA compliance, such vulnerabilities could potentially lead to unauthorized access to sensitive data, which may violate these regulations if exploited.

Mitigation Strategies

Update Google Chrome to version 155.0.8059.39 or later to address the incorrect authorization issue in Accessibility.

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