Security advisory

{
  "id": "9773c225b07632ae731cd0f7072daa477d8e699fef61a296287e02901e5ce797",
  "url": "https://osv.dev/vulnerability/CVE-2020-36564",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-36564",
    "summary": "Due to improper validation of caller input, validation is silently disabled if the provided expected token is malformed, causing any user supplied token to be considered valid.",
    "evidence": "osv:CVE-2020-36564",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-36564",
      "aliases": [
        "CVE-2020-36564",
        "GHSA-5x84-q523-vvwr",
        "GO-2020-0049"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/justinas/nosurf",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4d86df7a4affa1fa50ab39fb09aac56c3ce9c314"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nosurf_project:nosurf:*:*:*:*:*:go:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4d86df7a4affa1fa50ab39fb09aac56c3ce9c314"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.0",
            "v1.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-36564.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:21.424426811Z",
      "provider": "osv",
      "references": [
        "https://pkg.go.dev/vuln/GO-2020-0049",
        "https://github.com/justinas/nosurf/commit/4d86df7a4affa1fa50ab39fb09aac56c3ce9c314",
        "https://github.com/justinas/nosurf/pull/60"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-36564",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385148,
  "published_at": "2022-12-27T22:15:11.673+00:00"
}