CVE-2026-87493

Undergoing Analysis Undergoing Analysis - In Progress

Missing Authorization in Google Chrome FileSystem

Publication date: 2026-09-09

Last updated on: 2026-09-11

Assigner: Chrome

Description

Missing authorization in FileSystem in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

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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-2026-87493

EUVD

EUVD-2026-74407

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 is a missing authorization issue in the FileSystem component of Google Chrome versions before 153.0.8010.36. It allows a remote attacker to bypass system access restrictions through a crafted HTML page, potentially exploiting social engineering tactics.

Detection Guidance

This vulnerability involves missing authorization in Google Chrome's FileSystem component, allowing bypass of system access restrictions via crafted HTML. Detection primarily requires checking Chrome version and reviewing suspicious HTML content. No direct network/system commands are provided in the CVE details.

Impact Analysis

An attacker could trick you into visiting a malicious webpage that exploits this flaw to bypass security restrictions. This might allow unauthorized access to sensitive files or system resources on your device.

Compliance Impact

The vulnerability allows unauthorized access via crafted HTML pages, which could lead to data exposure or manipulation. This may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

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

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