CVE-2026-106253
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Incorrect Authorization in Google Chrome Extensions

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Chrome

Description
Incorrect authorization in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (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-2026-106253
EUVD
EUVD-2026-93707

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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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.

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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 security controls and access cross-origin data, meaning data from other websites or domains.

Impact Analysis

If you use Google Chrome with vulnerable extensions, an attacker might steal sensitive data from other websites you visit. This could include personal information, login credentials, or other confidential data accessed during your browsing sessions.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR's data protection principles or HIPAA's safeguards for protected health information. Organizations may face compliance breaches if user data is compromised through this flaw.

Mitigation Strategies

Update Google Chrome to version 155.0.8059.39 or later to address the incorrect authorization issue in Extensions.

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