The Feed Preview feature in Mozilla Firefox 2.0 before 2.0.0.1 sends the URL of the feed when requesting favicon.ico icons, which results in a privacy leak that might allow feed viewing services to determine browsing habits.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Firefox | Mozilla | 2.0 (including) | 2.0 (including) |
| Firefox | Ubuntu | dapper | * |
| Firefox | Ubuntu | edgy | * |
| Firefox | Ubuntu | feisty | * |
| Firefox-granparadiso | Ubuntu | devel | * |
| Lightning-sunbird | Ubuntu | devel | * |
| Midbrowser | Ubuntu | devel | * |