CVE-2026-12017
Received Received - Intake
Chrome Extension Site Isolation Bypass via HTML Injection

Publication date: 2026-06-11

Last updated on: 2026-06-11

Assigner: Chrome

Description
Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)
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Meta Information
Published
2026-06-11
Last Modified
2026-06-11
Generated
2026-06-12
AI Q&A
2026-06-12
EPSS Evaluated
N/A
NVD
CVE-2026-12017
EUVD
EUVD-2026-36338
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
google chrome to 149.0.7827.115 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Executive Summary

This vulnerability is an inappropriate implementation in the Extensions component of Google Chrome versions prior to 149.0.7827.115. It allows a remote attacker, who has already compromised the renderer process, to bypass site isolation by using a specially crafted HTML page.

Impact Analysis

The vulnerability can allow an attacker to bypass site isolation protections in the browser. This could lead to unauthorized access to data from other sites or browser processes, potentially exposing sensitive information or enabling further attacks within the browser environment.

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