CVE-2026-92062: Privilege escalation in the Session Restore component

Published Sep 15, 2026
·
Updated

Privilege escalation in the Session Restore component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.

Affected Software

2 affected components
Mozilla Firefox>156, >153.3
Mozilla Firefox ESR>153.3

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 156
  2. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 153.3

Event History

Sep 15, 2026
CVE Published
via MITRE·12:34 PM
Data Sourced
via MITRE·12:34 PM
Description

Frequently Asked Questions

1

Which releases contain the fix?

The issue was fixed in Firefox 156 and Firefox ESR 153.3.

Company

Resources

Contact

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