CVE-2026-121071

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Incorrect Authorization in Google Chrome FileSystem

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Incorrect authorization in FileSystem in Google Chrome prior to 157.0.8103.38 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

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Meta Information

Published

2026-11-03

Last Modified

2026-11-03

Generated

2026-11-04

AI Q&A

2026-11-04

EPSS Evaluated

N/A

NVD

CVE-2026-121071

EUVD

EUVD-2026-116515

Affected Vendors & Products

Vendor	Product	Version / Range
Google	Chrome	157.0.8103.38

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 the FileSystem component of Google Chrome before version 157.0.8103.38. It allows a remote attacker to potentially execute arbitrary code outside the sandbox by tricking a user into visiting a specially crafted HTML page. The attack relies on social engineering to exploit the flaw.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your system outside the browser's sandbox. This could lead to unauthorized access to your data, installation of malware, or further compromise of your device. The attack requires user interaction, such as clicking a malicious link.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the vulnerability.

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