CVE-2026-100761
published 2026-09-29CVE-2026-100761: Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
PriorityP347high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.24%
14.0th percentile
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | firefox | < Firefox 157 | Firefox 157 |
| mozilla | firefox | < 157.0.0 | 157.0.0 |
| mozilla | thunderbird | < Thunderbird 157 | Thunderbird 157 |
| mozilla | thunderbird | < 157.0 | 157.0 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat8.8HIGH
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GHSA
Privilege escalation due to use-after-free in the Graphics: WebGPU component.
ghsa_unreviewed·2026-09-29
CVE-2026-100761 [HIGH] CWE-416 Privilege escalation due to use-after-free in the Graphics: WebGPU component.
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 157.
Red Hat
firefox: Privilege escalation due to use-after-free in the Graphics: WebGPU component
vendor_redhat·2026-09-29·CVSS 8.8
CVE-2026-100761 [HIGH] CWE-825 firefox: Privilege escalation due to use-after-free in the Graphics: WebGPU component
firefox: Privilege escalation due to use-after-free in the Graphics: WebGPU component
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:
Privilege escalation due to use-after-free in the Graphics: WebGPU component
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: firefox (Red Hat Enterprise Linux 10) - Not affected
Package: rhel10/firefox-flatpak (Red Hat Enterprise Linux 10) - Not affected
Package: firefox (Red Hat Enterprise Linux 6) - Not affected
Package: firefox (Red Hat Enterprise Linux 7) - Not affec
Mozilla
Mozilla Foundation Security Advisory 2026-97: CVE-2026-100761
vendor_mozilla·CVSS 8.8
CVE-2026-100761 [HIGH] Mozilla Foundation Security Advisory 2026-97: CVE-2026-100761
Mozilla Foundation Security Advisory 2026-97
CVE: CVE-2026-100761
Product: Firefox
Impact: low
Fixed in: Firefox 157
Mozilla
Mozilla Foundation Security Advisory 2026-101: CVE-2026-100761
vendor_mozilla·CVSS 8.8
CVE-2026-100761 [HIGH] Mozilla Foundation Security Advisory 2026-101: CVE-2026-100761
Mozilla Foundation Security Advisory 2026-101
CVE: CVE-2026-100761
Product: Thunderbird
Impact: low
Fixed in: Thunderbird 157
No detection rules found.
No public exploits indexed.
2026-09-29
Published