CVE-2026-12009 Other in Chrome

High 8.3 Published Updated

A remote attacker with compromised renderer access can escape the sandbox on Mac via a crafted HTML page due to insufficient input validation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2026-12009?

CVE-2026-12009 is a high-severity vulnerability in Google Chrome, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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)

Weakness: CWE-20

Which versions are affected by CVE-2026-12009?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-12009?

Upgrade to a fixed version.

Is CVE-2026-12009 being exploited?

There is no known exploitation of CVE-2026-12009 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-12009, ECHO-9fd6-ef0f-8e98, GHSA-4h4g-832r-8c7f, MINI-f8rg-2pwh-m6pp.

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