CVE-2026-78959: Improper handling of case sensitivity in FileSystem

Published May 30, 2026
·
Updated

Improper handling of case sensitivity in FileSystem in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass system access restrictions via a crafted HTML page. (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 to a version that resolves this vulnerability.

    Fixed in 152.0.7977.65

Event History

May 30, 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·09:17 PM
DescriptionWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which Chrome versions need to be updated?

Google Chrome versions prior to 152.0.7977.65 are affected. Update Chrome to 152.0.7977.65 or a later version.

2

What does an attacker need to exploit this issue?

The attacker must persuade a user to interact with a crafted HTML page remotely. The available information does not indicate that network access, local access, or prior authentication is required.

3

How can an organization tell whether it may be affected?

Review deployed Google Chrome version numbers. Systems running a version earlier than 152.0.7977.65 should be considered affected.

Company

Resources

Contact

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