CVE-2026-11308: Inappropriate implementation in Extensions

Published Apr 24, 2026
·
Updated

Chromium: CVE-2026-11308 Inappropriate implementation in Extensions

Other sources

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to perform privilege escalation 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

Google

Affected Software

7 affected componentsFixes available
Google Chrome<149.0.7827.53
149.0.7827.53
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<149.0.4022.52
All of the following
Google Chrome<149.0.7827.53
Any of the following
Apple macOS
Linux Linux kernel
Microsoft Windows

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 149.0.7827.53
  2. Upgrade

    Upgrade Google Chrome to a version that resolves this vulnerability.

    Fixed in 149.0.7827.53
  3. Upgrade

    Upgrade Chromium to a version that resolves this vulnerability.

    Fixed in 149.0.7827.53
  4. Compensating control

    For Microsoft Edge (Chromium-based), ensure Edge is updated to a build that ingests the Chromium fix for CVE-2026-11308; verify the Edge release includes Chromium 149.0.7827.53 or later and apply that update.

Event History

Apr 24, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jun 4, 2026
CVE Published
via MITRE·11:06 PM
Data Sourced
via MITRE·11:06 PM
DescriptionWeakness
Jun 5, 2026
Data Sourced
via NVD·12:17 AM
DescriptionSeverityWeaknessAffected Software
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.

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Frequently Asked Questions

1

What is the severity of CVE-2026-11308?

CVE-2026-11308 has a medium severity rating of 6.3 on the CVSS scale.

2

How do I fix CVE-2026-11308?

To fix CVE-2026-11308, ensure that you update Google Chrome to version 149.0.7827.53 or later.

3

What attack vector is used in CVE-2026-11308?

CVE-2026-11308 allows for privilege escalation via a malicious Chrome extension installed by a user.

4

What versions of Google Chrome are affected by CVE-2026-11308?

Google Chrome versions prior to 149.0.7827.53 are affected by CVE-2026-11308.

5

What impact does CVE-2026-11308 have on user data?

CVE-2026-11308 could lead to potential data leakage due to inappropriate implementation in Extensions.

Company

Resources

Contact

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