Security advisory

{
  "id": "eb9e85c3f1ec802123deefaf80200a27a9efe3d6578ed3db2eca47f17a1197a3",
  "url": "https://osv.dev/vulnerability/CVE-2018-1000210",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-1000210",
    "summary": "YamlDotNet version 4.3.2 and earlier contains a Insecure Direct Object Reference vulnerability in The default behavior of Deserializer.Deserialize() will deserialize user-controlled types in the line \"currentType = Type.GetType(nodeEvent.Tag.Substring(1), throwOnError: false);\" and blindly instantiates them. that can result in Code execution in the context of the running process. This attack appear to be exploitable via Victim must parse a specially-crafted YAML file. This vulnerability appears to have been fixed in 5.0.0.",
    "evidence": "osv:CVE-2018-1000210",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-1000210",
      "aliases": [
        "CVE-2018-1000210",
        "GHSA-rpch-cqj9-h65r"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/aaubry/yamldotnet",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "8f20a18bb8a8c026bef7ce5ad66e7d8e198426df"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:yamldotnet_project:yamldotnet:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.3.2",
            "v4.3.1",
            "v4.3.0",
            "v4.2.4",
            "v4.2.3",
            "v4.2.2",
            "v4.2.1",
            "v4.2.0",
            "v4.1.0",
            "v4.0.0",
            "v3.9.0",
            "v3.8.0",
            "v3.7.0",
            "v3.6.1",
            "v3.6.0",
            "v3.3.1",
            "v3.3.0",
            "v3.2.2",
            "v3.2.1",
            "v3.2.0",
            "v3.1.1",
            "v3.1.0",
            "v3.0.0",
            "v2.3.0-rc",
            "v2.2.0",
            "v2.1.0",
            "v2.0.1",
            "v2.0.0",
            "v1.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000210.json"
          }
        }
      ],
      "modified": "2026-10-20T10:49:38.558344124Z",
      "provider": "osv",
      "references": [
        "https://github.com/aaubry/YamlDotNet#version-500",
        "https://github.com/aaubry/YamlDotNet/blob/f96b7cc40a0498f8bafdeb49df3aa23aa2c60993/YamlDotNet/Serialization/NodeTypeResolvers/TypeNameInTagNodeTypeResolver.cs#L35"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-1000210",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 380628,
  "published_at": "2018-07-13T18:29:00.397+00:00"
}