Security advisory

{
  "id": "40b00f3b84f640f3e47d5a855de99a9b4d84948e5e9b5ca16fe9a6bf54ccefa2",
  "url": "https://osv.dev/vulnerability/CVE-2017-9785",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2017-9785",
    "summary": "Csrf.cs in NancyFX Nancy before 1.4.4 and 2.x before 2.0-dangermouse has Remote Code Execution via Deserialization of JSON data in a CSRF Cookie.",
    "evidence": "osv:CVE-2017-9785",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2017-9785",
      "aliases": [
        "CVE-2017-9785",
        "GHSA-mx3q-j2g2-5qxq"
      ],
      "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/nancyfx/nancy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "d2d0240327efe8875025c4a3c68c093ac9bfb877"
                },
                {
                  "introduced": "a1035ca1db35c2cec69719db65f1a0a708dec776"
                },
                {
                  "last_affected": "72e1f6142efb01f91c5621750d8106bb6bc3f65e"
                },
                {
                  "fixed": "b826aaf6c00b51804c0de9542c1f7c13a3ef2604"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nancyfx:nancy:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.4.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:nancyfx:nancy:2.0.0:alpha:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0-alpha"
                      },
                      {
                        "last_affected": "2.0.0-alpha"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:nancyfx:nancy:2.0.0:barneyrubble:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0-barneyrubble"
                      },
                      {
                        "last_affected": "2.0.0-barneyrubble"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:nancyfx:nancy:2.0.0:clinteastwood:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0-clinteastwood"
                      },
                      {
                        "last_affected": "2.0.0-clinteastwood"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b826aaf6c00b51804c0de9542c1f7c13a3ef2604"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.4.4"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.0-alpha",
            "2.0.0-barneyrubble",
            "v1.4.3",
            "v2.0.0-clinteastwood",
            "v2.0.0-barneyrubble",
            "v2.0.0-alpha",
            "v1.4.2",
            "v1.4.1",
            "v1.4.0",
            "v1.3.0",
            "v1.2.0",
            "v1.1",
            "v1.0.0",
            "v0.23.2",
            "v0.23.1",
            "v0.23.0",
            "v0.22.2",
            "v0.22.1",
            "v0.22.0",
            "v0.21.1",
            "v0.21.0",
            "v0.20.0",
            "v0.18.0",
            "v0.17.0",
            "v0.17.1",
            "v0.16.1",
            "v0.16.0",
            "v0.15.3",
            "v0.12.0",
            "v0.8.1",
            "v0.8.0",
            "v0.7.0",
            "v0.7.1",
            "v0.6.0",
            "v0.5.0",
            "v0.4.0",
            "v0.0.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-9785.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:36.764103055Z",
      "provider": "osv",
      "references": [
        "https://github.com/NancyFx/Nancy/releases/tag/v1.4.4"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2017-9785",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380609,
  "published_at": "2017-07-20T12:29:00.187+00:00"
}