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

Source: https://junglewise.ai/threats/cve-2026-106426-race-condition-in-fonts-in-google-chrome-prior-to-155-0-8059-39  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/chrome). Vendors: [Google](https://junglewise.ai/threats/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

- [https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html](https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html)
- [https://issues.chromium.org/issues/547065823](https://issues.chromium.org/issues/547065823)

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