CVE-2026-87431

Modified Modified - Updated After Analysis

Missing Authorization in Google Chrome Extensions

Publication date: 2026-09-09

Last updated on: 2026-09-10

Assigner: Chrome

Description

Missing authorization in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain sensitive information via a crafted Chrome extension. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-09

Last Modified

2026-09-10

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-87431

EUVD

EUVD-2026-74406

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 153.0.8010.36 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability involves a missing authorization check in Google Chrome's Extensions feature. A remote attacker could exploit this by creating a specially crafted Chrome extension to bypass security controls and access sensitive information.

Detection Guidance

This vulnerability involves missing authorization in Google Chrome Extensions. Detection requires checking installed Chrome extensions for unauthorized access or sensitive data exposure. Review extension permissions in chrome://extensions and monitor network traffic for unusual extension activity. No specific commands are provided in the CVE details.

Impact Analysis

If you install a malicious Chrome extension exploiting this flaw, an attacker could steal sensitive data like passwords, browsing history, or personal files. Even trusted extensions could be weaponized if crafted to exploit this issue.

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 penalties if user data is exposed due to this flaw.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the missing authorization issue in Extensions.

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