{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.12.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b9944c161b12d9ee9c9334cfc5b9659ecd7451f8"
            },
            {
              "fixed": "9aa17bcdd777ee31df9fc83c337ca4ca2340def3"
            }
          ],
          "repo": "https://github.com/guzzle/guzzle",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g446-98w2-8p5w"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-346",
      "CWE-384"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59883.json"
  },
  "details": "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. This issue is fixed in version 7.12.3.",
  "id": "CVE-2026-59883",
  "modified": "2026-07-15T01:49:01.536371021Z",
  "published": "2026-07-08T15:56:03.689Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/guzzle/guzzle/releases/tag/7.12.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59883.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/guzzle/guzzle/security/advisories/GHSA-g446-98w2-8p5w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-59883"
    },
    {
      "type": "FIX",
      "url": "https://github.com/guzzle/guzzle/commit/b9944c161b12d9ee9c9334cfc5b9659ecd7451f8"
    },
    {
      "type": "FIX",
      "url": "https://github.com/guzzle/guzzle/pull/3694"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Guzzle: Cookie Disclosure and Injection via IP-Address Domains"
}