CVE-2026-8948
critical · 9.1Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
9.1
CVSS
0.4%
EPSS (exploit prob.)
36th
EPSS percentile
2026-05-19
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-942CWE-79
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| mozilla | firefox | < 151.0.0 |
| mozilla | thunderbird | < 151.0.0 |
Check a specific version with /api/v1/cve/match.
References
- 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
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-8948