CVE-2026-78947: Incomplete cleanup in Chromium

Published Jun 12, 2026
·
Updated

Chromium: CVE-2026-78947 Incomplete cleanup in Chromium

Other sources

Incomplete cleanup in Chromium in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass web origin policy via a crafted Chrome extension. (Chromium security severity: Low)

— 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

Microsoft Edge

Affected Software

5 affected componentsFixes available
Google Google Chrome<152.0.7977.65
Google Chrome<152.0.7977.64
152.0.7977.64
Microsoft Edge<152.0.4191.53
Google Chrome<152.0.7977.65
Microsoft Edge (Chromium-based)<152.0.4191.53
152.0.4191.53

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

    Fixed in 152.0.4191.53
  3. Upgrade

    Upgrade Chromium / Google Chrome (Chromium-based) to a version that resolves this vulnerability.

    Fixed in 152.0.7977.65
  4. Compensating control

    Mitigate potential exploitation by limiting the installation/usage of Chrome extensions (crafted extensions were leveraged to bypass web origin policy).

Event History

Jun 12, 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
DescriptionSeverityWeaknessAffected Software
Aug 28, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which Chrome versions should be considered affected?

Google Chrome versions prior to 152.0.7977.65 are affected. Updating to version 152.0.7977.65 or later addresses the issue.

2

What does an attacker need to exploit this issue?

Exploitation requires a crafted Chrome extension and social engineering to induce the target to interact with it. The issue is remotely exploitable in that scenario.

Company

Resources

Contact

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