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CVE-2026-12009: Insufficient validation of untrusted input in Google Chrome

0
High
VulnerabilityCVE-2026-12009cvecve-2026-12009
Published: Thu Jun 11 2026 (06/11/2026, 20:48:05 UTC)
Source: CVE Database V5
Vendor/Project: Google
Product: Chrome

Description

Insufficient validation of untrusted input in Accessibility in Google Chrome on Mac prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)

CVSS v3.1

Score 8.3high

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected software

GitHub Actionsmore threats →ai
chromium/chromium
pkg:github/chromium/chromium
Affected versions
<149.0.7827.115

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/11/2026, 22:00:21 UTC

Technical Analysis

This vulnerability arises from insufficient validation of untrusted input within the Accessibility feature of Google Chrome on Mac platforms. An attacker with control over the renderer process could exploit this flaw to perform a sandbox escape, which could lead to elevated privileges or further compromise of the system. The vulnerability affects Chrome versions before 149.0.7827.115. The vendor advisory linked does not explicitly confirm patch availability or remediation status.

Potential Impact

Successful exploitation could allow an attacker who has compromised the renderer process to escape the sandbox environment, potentially leading to increased privileges and further system compromise. This elevates the risk level significantly as sandbox escapes undermine one of the core security boundaries in Chrome.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html for current remediation guidance. Until an official fix is confirmed, users should exercise caution with untrusted content and consider limiting exposure to potentially malicious web pages.

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Technical Details

Data Version
5.2
Assigner Short Name
Chrome
Date Reserved
2026-06-11T18:16:02.919Z
Cvss Version
null
State
PUBLISHED
Remediation Level
null
Vendor Advisory Urls
[{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01962725236.html","vendor":"Google"}]

Threat ID: 6a2b290f815e7002b83416e6

Added to database: 6/11/2026, 9:30:55 PM

Last enriched: 6/11/2026, 10:00:21 PM

Last updated: 6/12/2026, 3:15:00 AM

Views: 4

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