CVE-2026-106426: Google Chrome race condition in Fonts sandbox escape

CVE-2026-106426 · Severity: info · Published 2026-10-06

Google Chrome's font handling component contains a race condition that could allow an attacker to escape the browser's sandbox and execute arbitrary code. An attacker could exploit this by crafting a malicious HTML page; successful exploitation would give the attacker the ability to run code with the same privileges as the user's browser.

Technologies: Google Chrome. Vendors: Google.

Quick answers

Is CVE-2026-106426 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-106426 being exploited in the wild.
How severe is CVE-2026-106426?
Informational severity, published 6 October 2026.
Which products and versions are affected?
Google Chrome before 155.0.8059.39.
Is there a fix for CVE-2026-106426?
Yes: fixed in Chrome 155.0.8059.39 (Windows and Mac), 155.0.8059.39 (Linux). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-106426 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-106426?
Check whether you run Google Chrome at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: Chrome 155.0.8059.39 (Windows and Mac), 155.0.8059.39 (Linux)

Technical details

A race condition exists in the Fonts component of Chromium prior to version 155.0.8059.39, allowing a remote attacker to bypass the sandbox via a crafted HTML page. The vulnerability is triggered through network-based attack vector with user interaction (user must visit a malicious page). Successful exploitation results in arbitrary code execution outside the sandbox, effectively breaking the browser's security isolation model.

Affected products

  • Google Chrome before 155.0.8059.39

Timeline

  • 2026-10-06: disclosed

References

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