{"schemaVersion":3,"id":"CVE-2026-59883","aliases":["UBUNTU-CVE-2026-59883","DEBIAN-CVE-2026-59883","CGA-9fvj-69rr-387f","CGA-fqjq-c2cp-q826"],"status":"published","duplicateOf":null,"title":null,"description":"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 cross-host cookie disclosure, cookie injection, or session fixation. 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