CVE-2026-106243: Incomplete cleanup in Proxy Auth

Published Jul 10, 2026
·
Updated

Incomplete cleanup in Proxy Auth in Google Chrome prior to 155.0.8059.39 allowed an adjacent attacker to obtain sensitive information via crafted network traffic. (Chromium security severity: High)

Credit

Google

Affected Software

2 affected componentsFixes available
Google Chrome<155.0.8059.39
155.0.8059.39
Google Chrome<155.0.8059.39

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 155.0.8059.39

Event History

Jul 10, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Oct 6, 2026
CVE Published
via MITRE·06:41 PM
Data Sourced
via MITRE·06:41 PM
DescriptionWeakness
Data Sourced
via NVD·07:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Who is realistically exposed to this issue?

Systems running Google Chrome before 155.0.8059.39 are exposed when an attacker can operate on an adjacent network path. The CVSS vector indicates network-adjacent access rather than remote Internet-only access.

2

Does exploitation require an account or user interaction?

No. The CVSS vector indicates no privileges and no user interaction are required, although exploitation has high attack complexity and requires crafted network traffic.

3

What is the impact if exploitation succeeds?

An adjacent attacker may obtain sensitive information. The provided CVSS vector rates confidentiality impact as high and indicates no integrity or availability impact.

4

How can I determine whether remediation is needed?

Check the installed Google Chrome version. Versions earlier than 155.0.8059.39 require an update to address this issue.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203