CVE-2026-106289
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Missing Authorization in FedCM in Google Chrome

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Chrome

Description
Missing authorization in FedCM in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
CVE-2026-106289
EUVD
EUVD-2026-93730

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Google Chrome 155.0.8059.39

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Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability is a missing authorization issue in FedCM (Federated Credential Management) in Google Chrome versions prior to 155.0.8059.39. It allows a remote attacker to bypass the web origin policy by tricking a user into visiting a crafted HTML page. The severity is rated as Medium by Chromium security team.

Impact Analysis

This vulnerability could allow an attacker to access sensitive user data or perform actions on behalf of the user without proper authorization. It may lead to unauthorized access to accounts or data if exploited through a malicious webpage.

Mitigation Strategies

Update Google Chrome to version 155.0.8059.39 or later to address the missing authorization issue in FedCM.

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