critical9.1
CVE-2026-8948
Same-origin policy bypass in the DOM: Networking component.
Impact
Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 151.0.0 |
| Mozilla | Thunderbird | before 151.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.mozilla.org/show_bug.cgi?id=2038803
- https://www.mozilla.org/security/advisories/mfsa2026-46/
- https://www.mozilla.org/security/advisories/mfsa2026-50/
- https://access.redhat.com/security/cve/CVE-2026-8948
- https://bugzilla.redhat.com/show_bug.cgi?id=2479850
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8948.json