CVE-2026-95339: Critical Use after free in ServiceWorker

Published Sep 25, 2026
·
Updated

Chromium CVE-2026-95339: Use after free in ServiceWorker

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 ServiceWorker in Google Chrome prior to 154.0.8037.57 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

— NVD

Affected Software

2 affected componentsFixes available
Google Chrome<154.0.8037.57
Microsoft Edge (Chromium-based)<154.0.4258.37
154.0.4258.37

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 154.0.4258.37
  2. Upgrade

    Upgrade Google Chrome to a version that resolves this vulnerability.

    Fixed in 154.0.8037.57

Event History

Sep 25, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Sep 29, 2026
CVE Published
via MITRE·05:31 PM
Data Sourced
via MITRE·05:31 PM
DescriptionWeakness
Data Sourced
via NVD·06:17 PM
DescriptionSeverityWeaknessAffected Software
Oct 7, 2026
Data Sourced
12:00 AM
SeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Company

Resources

Contact

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