CVE-2026-59883

A flaw was found in Guzzle, an extensible PHP HTTP client. The CookieJar component improperly handled cookies for IP-address or bare-numeric domains, failing to restrict them to the exact host. This vulnerability could allow a remote attacker to disclose cookies across different hosts, inject...

Improper Validation Of Cookie Domain

Guzzle is vulnerable to Improper Validation of Cookie Domain. The vulnerability is due to improper domain matching for cookies scoped to IP addresses or bare-numeric domains, which allows an attacker to perform cross-host cookie disclosure, cookie injection, or session fixation...