Security advisory

{
  "id": "e565b0747b2853d9998f8d1652f66a4d74135d3c6d135cf36daf681a78370f38",
  "url": "https://osv.dev/vulnerability/CVE-2020-26232",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-26232",
    "summary": "Jupyter Server before version 1.0.6 has an Open redirect vulnerability. A maliciously crafted link to a jupyter server could redirect the browser to a different website. All jupyter servers are technically affected, however, these maliciously crafted links can only be reasonably made for known jupyter server hosts. A link to your jupyter server may appear safe, but ultimately redirect to a spoofed server on the public internet.",
    "evidence": "osv:CVE-2020-26232",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-26232",
      "aliases": [
        "CVE-2020-26232",
        "GHSA-grfj-wjv9-4f9v",
        "PYSEC-2020-234"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/jupyter-server/jupyter_server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e17091698fb90db938a6a3d875b48271597a6db5"
                },
                {
                  "fixed": "3d83e49090289c431da253e2bdb8dc479cbcb157"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:jupyter:jupyter_server:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.0.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3d83e49090289c431da253e2bdb8dc479cbcb157"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.0.5",
            "1.0.4",
            "1.0.3",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "1.0.0rc16",
            "1.0.0rc15",
            "1.0.0rc14",
            "1.0.0rc13",
            "1.0.0rc12",
            "1.0.0rc11",
            "1.0.0rc10",
            "1.0.0rc9",
            "1.0.0rc8",
            "1.0.0rc7",
            "1.0.0rc6",
            "1.0.0rc5",
            "1.0.0rc4",
            "1.0.0rc3",
            "1.0.0rc2",
            "1.0.0rc1",
            "0.3.0",
            "0.2.0",
            "0.1.1",
            "0.1.0",
            "0.0.5",
            "0.0.4",
            "0.0.3",
            "0.0.2",
            "0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26232.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:56.092622255Z",
      "provider": "osv",
      "references": [
        "https://github.com/jupyter-server/jupyter_server/blob/master/CHANGELOG.md#106---2020-11-18",
        "https://github.com/jupyter/jupyter_server/security/advisories/GHSA-grfj-wjv9-4f9v",
        "https://github.com/jupyter-server/jupyter_server/commit/3d83e49090289c431da253e2bdb8dc479cbcb157"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-26232",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384055,
  "published_at": "2020-11-24T21:15:11.557+00:00"
}