Security advisory

{
  "id": "39f7005afd5684a64c50385f434ad1df12a3cfa5053f04fbd197f4171bda4a8b",
  "url": "https://osv.dev/vulnerability/CVE-2016-2221",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-2221",
    "summary": "Open redirect vulnerability in the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a malformed URL that triggers incorrect hostname parsing, as demonstrated by an https:example.com URL.",
    "evidence": "osv:CVE-2016-2221",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-2221",
      "aliases": [
        "CVE-2016-2221"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wordpress/wordpress",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "80d1f99a89bd7c892d2dccec915e62e8e4a6f8bb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.4.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.4.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2221.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://github.com/wordpress/wordpress-develop",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "b5ed4b53bf0ea238d7a9dba8b670a8a096a22288"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.4.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.4.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2221.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:40.148323508Z",
      "provider": "osv",
      "references": [
        "https://wpvulndb.com/vulnerabilities/8377",
        "https://codex.wordpress.org/Version_4.4.2",
        "https://core.trac.wordpress.org/changeset/36444",
        "https://wordpress.org/news/2016/02/wordpress-4-4-2-security-and-maintenance-release/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-2221",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434845,
  "published_at": "2016-05-22T01:59:14.103+00:00"
}