CVE-2026-9954: Use after free in TabStrip

Published Apr 19, 2026
·
Updated

Chromium: CVE-2026-9954 Use after free in TabStrip

Other sources

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

Use after free in TabStrip in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

— MITRE

Credit

yueliu(Microsoft)

Affected Software

9 affected componentsFixes available
Google Chrome<148.0.7778.216
Google Chrome<148.0.7778.216
148.0.7778.216
All of the following
Google Chrome<148.0.7778.216
Microsoft Windows
All of the following
Google Chrome<148.0.7778.215
Any of the following
Apple macOS
Linux Linux kernel
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<148.0.3967.96

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 148.0.7778.216
  2. Upgrade

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

    Fixed in 148.0.7778.216

Event History

Apr 19, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
May 28, 2026
CVE Published
via MITRE·10:25 PM
Data Sourced
via MITRE·10:25 PM
DescriptionWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
May 29, 2026
Data Sourced
via Microsoft·11:20 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·11:20 PM
DescriptionAffected Software
Apr 28, 58520
Event
via FIRST·12:00 PM

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-2026-9954?

The severity of CVE-2026-9954 is rated as high with a score of 7.5 on the CVSS scale.

2

What is the main issue of CVE-2026-9954?

CVE-2026-9954 describes a use after free vulnerability in the TabStrip component of Google Chrome.

3

How do I fix CVE-2026-9954?

To fix CVE-2026-9954, users should update Google Chrome and Microsoft Edge to version 148.0.7778.216 or later.

4

Which software is affected by CVE-2026-9954?

CVE-2026-9954 affects Google Chrome and Microsoft Edge that is based on Chromium.

5

What does use after free mean in CVE-2026-9954?

Use after free in CVE-2026-9954 refers to a condition where a program continues to use memory that has already been freed, potentially allowing attackers to execute arbitrary code.

Company

Resources

Contact

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