CVE-2026-106378: Privilege elevation in Sandbox

Published Apr 29, 2026
·
Updated

Chromium CVE-2026-106378: Privilege elevation

Other sources

Privilege elevation in Sandbox in Google Chrome on on Mac prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

— NVD

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

Paulos Yibelo Mesfin

Affected Software

4 affected componentsFixes available
Google Chrome<155.0.8059.39
155.0.8059.39
All of the following
Google Chrome<155.0.8059.39
Apple macOS
Microsoft Edge (Chromium-based)<155.0.4283.45
155.0.4283.45

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 155.0.4283.45
  3. Upgrade

    Upgrade Google Chrome to a version that resolves this vulnerability.

    Fixed in 155.0.8059.39

Event History

Apr 29, 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 16, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which installations are affected?

Google Chrome on Mac is affected when the version is earlier than 155.0.8059.39.

2

What does an attacker need to exploit this issue?

The attacker must first compromise the Chrome renderer process and use a crafted HTML page. The CVSS vector also indicates that user interaction is required.

3

What is the impact after successful exploitation?

A successful attacker can execute arbitrary code outside the Chrome sandbox, with high confidentiality, integrity, and availability impact.

4

How can teams determine whether they need to remediate?

Check the installed Google Chrome version on Mac systems. Versions prior to 155.0.8059.39 should be updated to that version or later.

Company

Resources

Contact

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