9.1
Critical
CVE-2026-8948 Same-origin policy bypass in the DOM: Networking component
Description
Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox 151 | earliest → < 151 | 151 |
| Thunderbird 151 | earliest → < 151 | 151 |
| 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 |