high7.5
CVE-2026-8964
Spoofing issue in the Popup Blocker component.
Impact
Spoofing issue in the Popup Blocker 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 |