CVE-2026-87468

Undergoing Analysis Undergoing Analysis - In Progress

Incorrect Authorization Bypass in Google Chrome

Publication date: 2026-09-09

Last updated on: 2026-09-11

Assigner: Chrome

Description

Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker 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

2026-09-09

Last Modified

2026-09-11

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87468

EUVD

EUVD-2026-74409

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.36 (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 is an incorrect authorization issue in Google Chrome's Isolated feature. It allows a remote attacker to bypass site isolation by tricking a user into visiting a specially crafted HTML page. This could let the attacker access data or perform actions in a different site's context than intended.

Detection Guidance

This vulnerability involves incorrect authorization in Google Chrome's site isolation feature. Detection primarily requires checking the installed Chrome version and verifying if it is prior to 153.0.8010.36. Use commands like 'google-chrome --version' or check via 'chrome://settings/help' in the browser.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive information from other websites you are logged into, such as cookies, session tokens, or personal data. It may also enable actions on your behalf without your knowledge.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, which may violate GDPR's data protection principles or HIPAA's safeguards for protected health information. Organizations using affected Chrome versions may face compliance risks if exploited.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the incorrect authorization issue in Isolated mode.

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