CVE-2026-102330

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in SiteIsolation in Google Chrome

Publication date: 2026-09-29

Last updated on: 2026-09-30

Assigner: Chrome

Description

Incorrect authorization in SiteIsolation in Google Chrome prior to 154.0.8037.92 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-29

Last Modified

2026-09-30

Generated

2026-10-19

AI Q&A

2026-09-30

EPSS Evaluated

2026-10-18

NVD

CVE-2026-102330

EUVD

EUVD-2026-89402

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 154.0.8037.92 (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 SiteIsolation in Google Chrome before version 154.0.8037.92. A remote attacker who already compromised the renderer process could bypass web origin policy by using a specially crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 154.0.8037.92. To detect it, check your Chrome version by running: chrome://version/ in the browser address bar. If the version is below 154.0.8037.92, the system is vulnerable. Update Chrome to the latest version to mitigate the issue.

Impact Analysis

If you use an affected version of Chrome, an attacker who gains control of the renderer process could access data from other websites, potentially stealing sensitive information like cookies, passwords, or personal data.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations using vulnerable Chrome versions may face compliance risks.

Mitigation Strategies

Update Google Chrome to version 154.0.8037.92 or later to address the vulnerability.

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