PubSub in Apple Safari before 4.0.5 does not properly implement use of the Accept Cookies preference to block cookies, which makes it easier for remote web servers to track users by setting a cookie in a (1) RSS or (2) Atom feed.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Safari | Apple | 4.0.2 | 4.0.2 |
| Safari | Apple | 4.0.1 | 4.0.1 |
| Safari | Apple | * | 4.0.4 |
| Safari | Apple | 4.0.3 | 4.0.3 |
| Safari | Apple | 4.0 | 4.0 |
| Safari | Apple | 4.0.0b | 4.0.0b |