CVE-2026-79222: Incorrect authorization in CustomTabs

Published Mar 25, 2026
·
Updated

Incorrect authorization in CustomTabs in Google Chrome on on Android prior to 152.0.7977.65 allowed a local attacker to bypass web origin policy via a co-installed app. (Chromium security severity: Medium)

Credit

Google

Affected Software

2 affected componentsFixes available
Google Google Chrome<152.0.7977.65
Google Chrome<152.0.7977.64
152.0.7977.64

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 152.0.7977.64
  2. Upgrade

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

    Fixed in 152.0.7977.65

Event History

Mar 25, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Aug 25, 2026
CVE Published
via MITRE·08:10 PM
Data Sourced
via MITRE·08:10 PM
DescriptionWeakness
Data Sourced
via NVD·09:18 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?

Android devices running Google Chrome versions earlier than 152.0.7977.65 are affected. Exploitation requires a co-installed malicious or compromised app on the same device.

2

Does exploitation require a remote website or network access?

The issue is described as exploitable by a local attacker through a co-installed app. The provided information does not indicate that network access or a remote-only attacker is sufficient.

3

What is the security impact of successful exploitation?

A successful attacker can bypass the web origin policy through CustomTabs, weakening the isolation normally enforced between web origins.

4

What should be prioritized for remediation?

Update Google Chrome on Android to version 152.0.7977.65 or later. Until updating is possible, reduce exposure by identifying and removing untrusted co-installed apps where feasible.

Company

Resources

Contact

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