CVE-2026-121193

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Incorrect Authorization in Google Chrome Extensions

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Incorrect authorization in Extensions in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass system access restrictions via a crafted Chrome extension. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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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-2026-121193

EUVD

EUVD-2026-116459

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 involves incorrect authorization in Google Chrome's Extensions feature. A remote attacker could exploit it by creating a specially crafted Chrome extension to bypass system access restrictions.

Impact Analysis

An attacker could use this flaw to gain unauthorized access to your system or data through a malicious Chrome extension. This might allow them to steal information, install malware, or perform actions on your behalf without proper permissions.

Mitigation Strategies

Update Google Chrome to version 157.0.8103.38 or later to address the incorrect authorization issue in Extensions.

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