CVE-2026-7946: Insufficient policy enforcement in WebUI

Published Mar 25, 2026
·
Updated

Chromium: CVE-2026-7946 Insufficient policy enforcement in WebUI

Other sources

Insufficient policy enforcement in WebUI in Google Chrome on Linux, Mac, Windows, ChromeOS prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation 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

Google

Affected Software

9 affected componentsFixes available
Google Google Chrome<148.0.7778.96
Google Chrome<148.0.7778.96
148.0.7778.96
All of the following
Google Chrome<148.0.7778.96
Any of the following
Apple macOS
Google Chrome OS
Linux Linux kernel
Microsoft Windows
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<148.0.3967.54

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 148.0.7778.96
  2. Upgrade

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

    Fixed in 148.0.7778.96
  3. Compensating control

    Ensure affected Chromium-based browsers (including Google Chrome and Microsoft Edge on Linux, Mac, Windows, ChromeOS) are updated to mitigate WebUI insufficient policy enforcement that could allow bypass of site isolation after renderer compromise; treat renderer compromise as a prerequisite and harden environment accordingly.

Event History

Mar 25, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
May 6, 2026
CVE Published
via MITRE·06:12 PM
Data Sourced
via MITRE·06:12 PM
DescriptionWeakness
Data Sourced
via NVD·07:16 PM
DescriptionSeverityWeaknessAffected Software
May 7, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software
Mar 11, 58323
Event
via FIRST·01:45 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-7946?

CVE-2026-7946 has been classified with a high severity level due to insufficient policy enforcement that allows potential site isolation bypass.

2

How do I fix CVE-2026-7946?

To fix CVE-2026-7946, ensure that you update Google Chrome to version 148.0.7778.96 or later.

3

What is the impact of CVE-2026-7946?

The impact of CVE-2026-7946 could allow an attacker to exploit the vulnerability to bypass site isolation and potentially access sensitive information.

4

Which versions of Google Chrome are affected by CVE-2026-7946?

CVE-2026-7946 affects all versions of Google Chrome prior to 148.0.7778.96.

5

On which operating systems does CVE-2026-7946 pose a risk?

CVE-2026-7946 poses a risk on Google Chrome running on Linux, Mac, Windows, and ChromeOS.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203