CVE-2026-92053
Privilege escalation in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.8
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS probability
- 0.26%
- Published
- 2026-09-15
- Last modified
- 2026-09-16
Affected products
- Mozilla Firefox
- Mozilla Firefox
- Mozilla Thunderbird
- Mozilla Thunderbird