CVE-2026-10939: Use after free in WebRTC

Published Apr 17, 2026
·
Updated

Chromium: CVE-2026-10939 Use after free in WebRTC

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 WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

— MITRE

Credit

Google

Affected Software

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

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/Chromium (WebRTC) to a version that resolves this vulnerability.

    Fixed in 149.0.7827.53
  3. Compensating control

    As a mitigation until patched, restrict access to untrusted HTML content that could trigger the WebRTC use-after-free (e.g., block or isolate untrusted pages).

  4. Operational

    After updating Chromium/Edge/Chrome to 149.0.7827.53 or later, restart browsers to ensure the patched WebRTC code is loaded.

Event History

Apr 17, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Jun 4, 2026
CVE Published
via MITRE·11:03 PM
Data Sourced
via MITRE·11:03 PM
DescriptionWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
Jun 5, 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.

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Frequently Asked Questions

1

What is the severity of CVE-2026-10939?

CVE-2026-10939 has a high severity rating of 8.8 according to the CVSS 3.1 scoring.

2

What does CVE-2026-10939 affect?

CVE-2026-10939 affects WebRTC in Google Chrome and Chromium-based Microsoft Edge browsers.

3

How can I fix CVE-2026-10939?

To fix CVE-2026-10939, users should update Google Chrome to version 149.0.7827.53 or later and Microsoft Edge to the latest version.

4

What type of vulnerability is CVE-2026-10939?

CVE-2026-10939 is classified as a 'Use After Free' vulnerability.

5

When was CVE-2026-10939 published?

CVE-2026-10939 was published on April 17, 2026.

Company

Resources

Contact

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