Security advisory

{
  "id": "726287e9c8ecf633de3f0c14366a0ec4b99b75ce06161916facfd640f315451d",
  "url": "https://osv.dev/vulnerability/CVE-2018-20060",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-20060",
    "summary": "urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the Authorization header to be exposed to unintended hosts or transmitted in cleartext.",
    "evidence": "osv:CVE-2018-20060",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-20060",
      "aliases": [
        "CVE-2018-20060",
        "GHSA-www2-v7xj-xrc6",
        "PYSEC-2018-32"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/urllib3/urllib3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7c216f433e39e184b84cbfa49e41135a89e4baa0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:python:urllib3:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.23"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.22",
            "1.21.1",
            "1.21",
            "1.20",
            "1.19",
            "1.18",
            "1.16",
            "1.15.1",
            "1.15",
            "1.14",
            "1.13.1",
            "1.13",
            "1.12",
            "1.11",
            "1.10.4",
            "1.10.3",
            "1.7.1",
            "1.7",
            "1.6",
            "1.5",
            "1.4",
            "1.3",
            "1.2.1",
            "1.2",
            "1.1",
            "0.4.1",
            "0.4",
            "0.3.1",
            "0.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-20060.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:24.236451365Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2021/06/msg00015.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5SJERZEJDSUYQP7BNBXMBHRHGY26HRZD/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BXLAXHM3Z6DUCXZ7ZXZ2EAYJXWDCZFCT/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWP36YW3KSVLXDBY3QJKDYEPCIMN3VQZ/",
        "https://usn.ubuntu.com/3990-1/",
        "https://access.redhat.com/errata/RHSA-2019:2272",
        "https://github.com/urllib3/urllib3/blob/master/CHANGES.rst",
        "https://github.com/urllib3/urllib3/issues/1316",
        "https://github.com/urllib3/urllib3/pull/1346",
        "https://security.netapp.com/advisory/ntap-20241227-0010/",
        "https://bugzilla.redhat.com/show_bug.cgi?id=1649153"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
              "cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*"
            ],
            "vendor_product": "fedoraproject:fedora",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "28"
                  },
                  {
                    "last_affected": "28"
                  },
                  {
                    "introduced": "29"
                  },
                  {
                    "last_affected": "29"
                  },
                  {
                    "introduced": "30"
                  },
                  {
                    "last_affected": "30"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-20060",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381680,
  "published_at": "2018-12-11T17:29:00.38+00:00"
}