Apple Safari allows web sites to set cookies for country-specific top-level domains, such as co.uk and com.au, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session, aka "Cross-Site Cooking," a related issue to CVE-2004-0746, CVE-2004-0866, and CVE-2004-0867.

Mozilla Firefox 0.9.2 allows web sites to set cookies for country-specific top-level domains, such as .ltd.uk, .plc.uk, and .sch.uk, which could allow remote attackers to perform a session fixation attack and hijack a user's HTTP session. NOTE: it was later reported that 2.x is also affected.