CVE-2026-12034
Received Received - Intake
Linux Toolkit Theming Sandbox Escape in Google Chrome

Publication date: 2026-06-11

Last updated on: 2026-06-11

Assigner: Chrome

Description
Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (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-2026-12034
EUVD
EUVD-2026-36354
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
google chrome 149.0.7827.115
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 involves insufficient validation of untrusted input in the Linux Toolkit Theming feature of Google Chrome on Linux versions prior to 149.0.7827.115. A remote attacker who has already compromised the renderer process could exploit this flaw to potentially escape the browser's sandbox by using a malicious file.

Impact Analysis

If exploited, this vulnerability could allow an attacker to break out of the sandbox environment that normally restricts the browser's capabilities. This could lead to unauthorized access to the underlying operating system or other sensitive resources, increasing the risk of further compromise or damage.

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