CVE-2026-11686
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Insufficient Input Validation in Google Chrome on macOS Leads to Cross-Origin Data Leak

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: Chrome

Description
Insufficient validation of untrusted input in Dawn in Google Chrome on macOS prior to 149.0.7827.103 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-09
AI Q&A
2026-06-09
EPSS Evaluated
N/A
NVD
CVE-2026-11686
EUVD
EUVD-2026-35212
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
google chrome to 149.0.7827.103 (exc)
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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 Dawn component of Google Chrome on macOS versions prior to 149.0.7827.103.

A remote attacker who has compromised the renderer process can exploit this flaw by using a specially crafted HTML page to leak cross-origin data.

This means that data from one origin (website) could be accessed by another origin without proper authorization.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of sensitive information by allowing an attacker to leak data from other origins.

If an attacker compromises the renderer process, they could use this flaw to access data that should be isolated, potentially exposing personal or confidential information.

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