CVE-2026-126906: Race condition in Extensions

Published Oct 28, 2026
·
Updated

Race condition in Extensions in Google Chrome on on Mac prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to obtain sensitive information via crafted network traffic. (Chromium security severity: High)

Credit

Google

Affected Software

1 affected componentFixes available
Google Chrome<157.0.8103.78
157.0.8103.78

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 157.0.8103.78

Event History

Oct 28, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Nov 11, 2026
CVE Published
via MITRE·10:39 PM
Data Sourced
via MITRE·10:39 PM
DescriptionWeakness
Data Sourced
via NVD·11:17 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Who is exposed to this issue?

The affected population is Google Chrome on Mac versions prior to 157.0.8103.78. Exploitation also requires that the attacker has already compromised the Chrome renderer process.

2

Does a remote attacker need to compromise the browser before exploiting this?

Yes. The issue is described as reachable by a remote attacker who has compromised the renderer process, using crafted network traffic to obtain sensitive information.

3

What is the remediation?

Update Google Chrome on Mac to version 157.0.8103.78 or later. The provided information does not identify a workaround for systems that cannot yet be updated.

Company

Resources

Contact

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