GHSA-G446-98W2-8P5W Guzzle: Cookie Disclosure and Injection via IP-Address Domains

Impact CookieJar does not restrict a cookie scoped to an IP address to the exact host that set it. When a stored cookie's Domain attribute is an IPv4 literal Domain=192.168.0.1, a bracketed IPv6 literal Domain=::1, or a bare numeric value that denotes an IPv4 address Domain=1, which is 0.0.0.1,...

CVE-2026-59883 Guzzle: Cookie Disclosure and Injection via IP-Address Domains

Guzzle is an extensible PHP HTTP client. Prior to 7.12.3, CookieJar did not restrict cookies scoped to IP-address or bare-numeric Domain values to the exact host that set them, because SetCookie::matchesDomain applied ordinary suffix matching to domains such as 192.168.0.1, ::1, or 1, allowing...

CVE-2026-59883

CVE-2026-59883 – Guzzle: CookieJar domain-matching flaw in the PHP HTTP client allowed cookies scoped to IP-address or bare-numeric domains (e.g., 192.168.0.1, ::1) to be accepted by non-origin hosts due to SetCookie::matchesDomain() applying ordinary suffix matching. Affects versions prior to 7....