CVE-2026-13878 Use after free in Chrome

Critical 9.6 Published Updated

A remote attacker with compromised renderer access can escape the sandbox via a crafted HTML page in Chrome on Mac.

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-2026-13878?

CVE-2026-13878 is a critical use after free vulnerability in Google Chrome, published on 30 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

Use after free in Bluetooth in Google Chrome on Mac prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

Weakness: CWE-416

Which versions are affected by CVE-2026-13878?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-13878?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-13878 being exploited?

There is no known exploitation of CVE-2026-13878 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-13878, ECHO-490e-06ba-f374, GHSA-j864-w7vw-6xg3, MINI-6368-jqfm-gh72.

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