Race condition in Headless in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code outside the sandbox

Summary

Race condition in Headless in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

Remediation

1. Inventory every Google Chrome deployment, including staging.
2. Upgrade Google Chrome to 156.0.8078.73.
3. Confirm the running version after the upgrade.

References

• Advisoryhttps://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_0562499947.html
• Referencehttps://issues.chromium.org/issues/572111820