CVE-2026-9978: Use after free in Glic

Published May 10, 2026
·
Updated

Chromium: CVE-2026-9978 Use after free in Glic

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 Glic in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

— NVD

Credit

Google

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 to a version that resolves this vulnerability.

    Fixed in 148.0.7778.216
  3. Compensating control

    Mitigate exposure to CVE-2026-9978 by preventing untrusted HTML from being rendered in Edge/Chromium before updating to 148.0.7778.216.

Event History

May 10, 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·11:21 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·11:21 PM
DescriptionAffected Software
Apr 28, 58520
Event
via FIRST·04:08 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-2026-9978?

CVE-2026-9978 has a high severity rating of 8.8 according to the CVSS 3.1 standard.

2

How do I fix CVE-2026-9978?

To mitigate CVE-2026-9978, update to Google Chrome version 148.0.7778.216 or later for Chrome and the latest version of Microsoft Edge.

3

What is the impact of CVE-2026-9978?

CVE-2026-9978 can lead to potential remote code execution due to a use after free vulnerability in Glic.

4

Which software is affected by CVE-2026-9978?

CVE-2026-9978 affects Google Chrome and Microsoft Edge (Chromium-based) browsers.

5

What type of vulnerability is CVE-2026-9978 classified as?

CVE-2026-9978 is classified as a 'Use After Free' vulnerability.

Company

Resources

Contact

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