CVE-2026-121248

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Incorrect Authorization in Google Chrome API

Publication date: 2026-11-03

Last updated on: 2026-11-03

Assigner: Chrome

Description

Incorrect authorization in API 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

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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-2026-121248

EUVD

EUVD-2026-116460

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 API before version 157.0.8103.38. A remote attacker could exploit a crafted Chrome extension to bypass system access restrictions.

Impact Analysis

An attacker could gain unauthorized access to your system or data by tricking you into installing a malicious Chrome extension. This may lead to data theft, unauthorized actions, or further compromise of your system.

Mitigation Strategies

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

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