CVE-2026-106378 Privilege escalation in Chrome

What is CVE-2026-106378?

CVE-2026-106378 is a high-severity vulnerability in Google Chrome, published on 6 Oct 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

Privilege elevation in Sandbox in Google Chrome on on Mac prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Weakness: CWE-250

Which versions are affected by CVE-2026-106378?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-106378?

Upgrade to a fixed version.

Is CVE-2026-106378 being exploited?

There is no known exploitation of CVE-2026-106378 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-106378, ECHO-586d-c925-4cd1, GHSA-h2mx-fjwm-h5h6, MINI-93gr-vf82-x66r.