8.8
High
CVE-2026-2799 Use-after-free in the DOM: Core & HTML component
Description
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 148 | earliest → < 148 | 148 |
| Thunderbird 148 | earliest → < 148 | 148 |
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published |