Security advisory

{
  "id": "d78c0a6633d0b647f14d8407caf7cd9520b8d07ed44e1380b88bd33007cce95d",
  "url": "https://osv.dev/vulnerability/CVE-2025-27221",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-27221",
    "summary": "In the URI gem before 1.0.3 for Ruby, the URI handling methods (URI.join, URI#merge, URI#+) have an inadvertent leakage of authentication credentials because userinfo is retained even after changing the host.",
    "evidence": "osv:CVE-2025-27221",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-27221",
      "aliases": [
        "CVE-2025-27221",
        "GHSA-22h5-pq3x-2gf2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ruby/uri",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c13dfc2164bc4af31085e709ab348fdbd527013f"
                },
                {
                  "introduced": "72f22716f86fe6bccf52c167cbb30e1a6e70aaca"
                },
                {
                  "fixed": "b079fb331eba7254d13e5e3c7e1853f9b28fc63a"
                },
                {
                  "introduced": "b50d37f7a193991c56bda7f94e8dd6fec0bb3f7f"
                },
                {
                  "fixed": "cef02d63f5e0d7685631e0ed9324b2801784c871"
                },
                {
                  "introduced": "af8d9d6bb1a90da71f64a9c3f8eddd3626d44efb"
                },
                {
                  "fixed": "3213f4a0f80f10c8f36993dbb9eabe7f2c1b50fd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.11.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0.12.0"
                      },
                      {
                        "fixed": "0.12.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0.13.0"
                      },
                      {
                        "fixed": "0.13.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:ruby-lang:uri:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "1.0.0"
                      },
                      {
                        "fixed": "1.0.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.13.1",
            "v0.12.3",
            "v0.11.2",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0",
            "v0.13.0",
            "v0.12.2",
            "v0.11.1",
            "v0.12.1",
            "v0.11.0",
            "v0.10.1",
            "v0.10.0",
            "v0.12.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-27221.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.193814390Z",
      "provider": "osv",
      "references": [
        "https://hackerone.com/reports/2957667",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00008.html",
        "https://lists.debian.org/debian-lts-announce/2025/05/msg00015.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27221.json",
        "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/uri/CVE-2025-27221.yml",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-27221"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-212"
        ],
        "cna_assigner": "mitre",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "0.11.3"
                  },
                  {
                    "introduced": "0.12.0"
                  },
                  {
                    "fixed": "0.12.4"
                  },
                  {
                    "introduced": "0.13.0"
                  },
                  {
                    "fixed": "0.13.2"
                  },
                  {
                    "introduced": "1.0.0"
                  },
                  {
                    "fixed": "1.0.3"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27221.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-27221",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488389,
  "published_at": "2025-03-03T00:00:00+00:00"
}