Each site is supposed to have its own cookies, so a site like example.com should not be able to alter or set cookies for another site, like example.org. Cross-site cooking vulnerabilities in web browsers allow malicious sites to break this rule. This is similar to cookie poisoning, but the attacker exploits non-malicious users with vulnerable browsers, instead of attacking the actual site directly. The goal of such attacks may be to perform session fixation.

Users are advised to use the more recent versions of web browsers in which such issue is mitigated.

Uses
Tracking
Cross-site cooking
Cookie poisoning