Mozilla Firefox before 3.6.18, Thunderbird before 3.1.11, and SeaMonkey through 2.0.14 do not distinguish between cookies for two domain names that differ only in a trailing dot, which allows remote web servers to bypass the Same Origin Policy via Set-Cookie headers.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Seamonkey | Mozilla | 1.0 (including) | 1.0 (including) |
| Seamonkey | Mozilla | 1.0-alpha (including) | 1.0-alpha (including) |
| Seamonkey | Mozilla | 1.0-beta (including) | 1.0-beta (including) |
| Seamonkey | Mozilla | 1.0.1 (including) | 1.0.1 (including) |
| Seamonkey | Mozilla | 1.0.2 (including) | 1.0.2 (including) |
| Seamonkey | Mozilla | 1.0.3 (including) | 1.0.3 (including) |
| Seamonkey | Mozilla | 1.0.4 (including) | 1.0.4 (including) |
| Seamonkey | Mozilla | 1.0.5 (including) | 1.0.5 (including) |
| Seamonkey | Mozilla | 1.0.6 (including) | 1.0.6 (including) |
| Seamonkey | Mozilla | 1.0.7 (including) | 1.0.7 (including) |
| Seamonkey | Mozilla | 1.0.8 (including) | 1.0.8 (including) |
| Seamonkey | Mozilla | 1.0.9 (including) | 1.0.9 (including) |
| Seamonkey | Mozilla | 1.1 (including) | 1.1 (including) |
| Seamonkey | Mozilla | 1.1-alpha (including) | 1.1-alpha (including) |
| Seamonkey | Mozilla | 1.1-beta (including) | 1.1-beta (including) |
| Seamonkey | Mozilla | 1.1.1 (including) | 1.1.1 (including) |
| Seamonkey | Mozilla | 1.1.2 (including) | 1.1.2 (including) |
| Seamonkey | Mozilla | 1.1.3 (including) | 1.1.3 (including) |
| Seamonkey | Mozilla | 1.1.4 (including) | 1.1.4 (including) |
| Seamonkey | Mozilla | 1.1.5 (including) | 1.1.5 (including) |
| Seamonkey | Mozilla | 1.1.6 (including) | 1.1.6 (including) |
| Seamonkey | Mozilla | 1.1.7 (including) | 1.1.7 (including) |
| Seamonkey | Mozilla | 1.1.8 (including) | 1.1.8 (including) |
| Seamonkey | Mozilla | 1.1.9 (including) | 1.1.9 (including) |
| Seamonkey | Mozilla | 1.1.10 (including) | 1.1.10 (including) |
| Seamonkey | Mozilla | 1.1.11 (including) | 1.1.11 (including) |
| Seamonkey | Mozilla | 1.1.12 (including) | 1.1.12 (including) |
| Seamonkey | Mozilla | 1.1.13 (including) | 1.1.13 (including) |
| Seamonkey | Mozilla | 1.1.14 (including) | 1.1.14 (including) |
| Seamonkey | Mozilla | 1.1.15 (including) | 1.1.15 (including) |
| Seamonkey | Mozilla | 1.1.16 (including) | 1.1.16 (including) |
| Seamonkey | Mozilla | 1.1.17 (including) | 1.1.17 (including) |
| Seamonkey | Mozilla | 1.1.18 (including) | 1.1.18 (including) |
| Seamonkey | Mozilla | 1.1.19 (including) | 1.1.19 (including) |
| Seamonkey | Mozilla | 1.5.0.8 (including) | 1.5.0.8 (including) |
| Seamonkey | Mozilla | 1.5.0.9 (including) | 1.5.0.9 (including) |
| Seamonkey | Mozilla | 1.5.0.10 (including) | 1.5.0.10 (including) |
| Seamonkey | Mozilla | 2.0 (including) | 2.0 (including) |
| Seamonkey | Mozilla | 2.0-alpha_1 (including) | 2.0-alpha_1 (including) |
| Seamonkey | Mozilla | 2.0-alpha_2 (including) | 2.0-alpha_2 (including) |
| Seamonkey | Mozilla | 2.0-alpha_3 (including) | 2.0-alpha_3 (including) |
| Seamonkey | Mozilla | 2.0-beta_1 (including) | 2.0-beta_1 (including) |
| Seamonkey | Mozilla | 2.0-beta_2 (including) | 2.0-beta_2 (including) |
| Seamonkey | Mozilla | 2.0-rc1 (including) | 2.0-rc1 (including) |
| Seamonkey | Mozilla | 2.0-rc2 (including) | 2.0-rc2 (including) |
| Seamonkey | Mozilla | 2.0.1 (including) | 2.0.1 (including) |
| Seamonkey | Mozilla | 2.0.2 (including) | 2.0.2 (including) |
| Seamonkey | Mozilla | 2.0.3 (including) | 2.0.3 (including) |
| Seamonkey | Mozilla | 2.0.4 (including) | 2.0.4 (including) |
| Seamonkey | Mozilla | 2.0.5 (including) | 2.0.5 (including) |
| Seamonkey | Mozilla | 2.0.6 (including) | 2.0.6 (including) |
| Seamonkey | Mozilla | 2.0.7 (including) | 2.0.7 (including) |
| Seamonkey | Mozilla | 2.0.8 (including) | 2.0.8 (including) |
| Seamonkey | Mozilla | 2.0.9 (including) | 2.0.9 (including) |
| Seamonkey | Mozilla | 2.0.10 (including) | 2.0.10 (including) |
| Seamonkey | Mozilla | 2.0.11 (including) | 2.0.11 (including) |
| Seamonkey | Mozilla | 2.0.12 (including) | 2.0.12 (including) |
| Seamonkey | Mozilla | 2.0.13 (including) | 2.0.13 (including) |
| Seamonkey | Mozilla | 2.0.14 (including) | 2.0.14 (including) |
| Red Hat Enterprise Linux 4 | RedHat | firefox-0:3.6.18-2.el4 | * |
| Red Hat Enterprise Linux 4 | RedHat | thunderbird-0:1.5.0.12-39.el4 | * |
| Red Hat Enterprise Linux 4 | RedHat | seamonkey-0:1.0.9-71.el4 | * |
| Red Hat Enterprise Linux 5 | RedHat | firefox-0:3.6.18-1.el5_6 | * |
| Red Hat Enterprise Linux 5 | RedHat | xulrunner-0:1.9.2.18-2.el5_6 | * |
| Red Hat Enterprise Linux 5 | RedHat | thunderbird-0:2.0.0.24-18.el5_6 | * |
| Red Hat Enterprise Linux 6 | RedHat | firefox-0:3.6.18-1.el6_1 | * |
| Red Hat Enterprise Linux 6 | RedHat | xulrunner-0:1.9.2.18-2.el6_1 | * |
| Red Hat Enterprise Linux 6 | RedHat | thunderbird-0:3.1.11-2.el6_1 | * |
| Firefox | Ubuntu | hardy | * |
| Firefox | Ubuntu | lucid | * |
| Firefox | Ubuntu | maverick | * |
| Firefox | Ubuntu | upstream | * |
| Firefox-3.0 | Ubuntu | hardy | * |
| Firefox-3.0 | Ubuntu | upstream | * |
| Firefox-3.5 | Ubuntu | upstream | * |
| Seamonkey | Ubuntu | hardy | * |
| Seamonkey | Ubuntu | lucid | * |
| Seamonkey | Ubuntu | maverick | * |
| Seamonkey | Ubuntu | natty | * |
| Seamonkey | Ubuntu | upstream | * |
| Thunderbird | Ubuntu | hardy | * |
| Thunderbird | Ubuntu | lucid | * |
| Thunderbird | Ubuntu | maverick | * |
| Thunderbird | Ubuntu | natty | * |
| Thunderbird | Ubuntu | upstream | * |
| Xulrunner-1.9.2 | Ubuntu | hardy | * |
| Xulrunner-1.9.2 | Ubuntu | lucid | * |
| Xulrunner-1.9.2 | Ubuntu | maverick | * |
| Xulrunner-1.9.2 | Ubuntu | upstream | * |