WebRender vulnerabilities
5 known CVE vulnerabilities in WebRender, translated and rated.
- CVE-2026-2761Critical
A sandbox escape vulnerability exists in the Graphics: WebRender component of Firefox and Thunderbird. The flaw is fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
- CVE-2026-2760Critical
A sandbox escape vulnerability exists in the WebRender component of Firefox and Thunderbird due to incorrect boundary conditions in graphics handling. The flaw is fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
- CVE-2026-12289High
A privilege escalation vulnerability exists in the Graphics: WebRender component. It was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
- CVE-2026-6750High
A privilege escalation vulnerability exists in the Graphics: WebRender component of Firefox and Thunderbird. It is fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
- CVE-2026-4684High
A race condition and use-after-free vulnerability was found in the WebRender component of Firefox and Thunderbird. It is fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.