CVE-2026-92053: Privilege escalation in the Graphics: CanvasWebGL component
Published Sep 15, 2026
·Updated
Privilege escalation in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.
Affected Software
2 affected components
Mozilla Firefox=156
Firefox ESR 153.3=153.3
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Firefox (Graphics: CanvasWebGL)to a version that resolves this vulnerability.Fixed in 156 - Upgrade
Upgrade
Firefox ESR (Graphics: CanvasWebGL)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 Firefox releases contain the fix?
The vulnerability was fixed in Firefox 156 and Firefox ESR 153.3.