CVE-2026-106405: Race condition in CustomTabs

Published May 27, 2026
·
Updated

Chromium CVE-2026-106405: Race condition in CustomTabs

Other sources

Race condition in CustomTabs in Google Chrome on on Android prior to 155.0.8059.39 allowed a local attacker to bypass web origin policy via a co-installed app. (Chromium security severity: Medium)

— MITRE

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Credit

Google

Affected Software

5 affected componentsFixes available
Google Chrome<155.0.8059.39
155.0.8059.39
All of the following
Google Chrome<155.0.8059.39
Google Android
Microsoft Edge (Chromium-based)<155.0.4283.48
155.0.4283.48
Microsoft Edge<155.0.4283.48
155.0.4283.48

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
  2. Upgrade

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

    Fixed in 155.0.4283.48
  3. Upgrade

    Upgrade Google Chrome on Android to a version that resolves this vulnerability.

    Fixed in 155.0.8059.39

Event History

May 27, 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·07:18 PM
DescriptionSeverityWeaknessAffected Software
Oct 27, 2026
Data Sourced
via Microsoft·06:51 AM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which devices are exposed to this issue?

Google Chrome on Android is affected when the installed version is earlier than 155.0.8059.39. The provided information does not identify exposure on other platforms.

2

What access does an attacker need to exploit this?

The attacker must be local and use a co-installed app. The issue is not described as remotely exploitable through a website alone.

3

What is the remediation version?

Update Google Chrome on Android to version 155.0.8059.39 or later.

Company

Resources

Contact

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