CVE-2026-87466

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in Google Chrome Workers

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description

Incorrect authorization in Workers in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy 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

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87466

EUVD

EUVD-2026-74328

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 involves incorrect authorization in Google Chrome's Workers feature. It allows a remote attacker to bypass web origin policy by tricking a user into visiting a crafted HTML page. This means the attacker could access resources or data from a different website than intended.

Detection Guidance

This vulnerability involves incorrect authorization in Google Chrome's Workers feature. Detection primarily requires checking the Chrome version and monitoring for unusual web origin policy bypass attempts. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive data from other websites you visit, such as cookies, session tokens, or personal information. It may also enable phishing attacks or unauthorized actions on your behalf.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR's data protection principles or HIPAA's safeguards for protected health information. Organizations may face compliance breaches if user data is exposed due to this issue.

Mitigation Strategies

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

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