Security advisory

{
  "id": "ee03f8657a866a80d4019737cec502641278f952735e4576d91f75211c49a8ea",
  "url": "https://osv.dev/vulnerability/CVE-2019-18213",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-18213",
    "summary": "XML Language Server (aka lsp4xml) before 0.9.1, as used in Red Hat XML Language Support (aka vscode-xml) before 0.9.1 for Visual Studio and other products, allows XXE via a crafted XML document, with resultant SSRF (as well as SMB connection initiation that can lead to NetNTLM challenge/response capture for password cracking). This occurs in extensions/contentmodel/participants/diagnostics/LSPXMLParserConfiguration.java.",
    "evidence": "osv:CVE-2019-18213",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-18213",
      "aliases": [
        "CVE-2019-18213"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/eclipse-lemminx/lemminx",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "bfbd50a13179fb3caed27655564a9202c2e86c72"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:xml_language_server_project:xml_server_project:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.9.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.9.0",
            "0.7.0",
            "0.6.0",
            "0.5.1",
            "0.5.0",
            "0.4.0",
            "0.3.0",
            "v0.0.2",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18213.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:42.315736351Z",
      "provider": "osv",
      "references": [
        "https://github.com/angelozerr/lsp4xml/",
        "https://github.com/angelozerr/lsp4xml/blob/master/CHANGELOG.md#others",
        "https://marketplace.visualstudio.com/items?itemName=redhat.vscode-xml",
        "https://github.com/angelozerr/lsp4xml/pull/566",
        "https://github.com/redhat-developer/vscode-xml/",
        "https://www.shielder.it/blog/dont-open-that-xml-xxe-to-rce-in-xml-plugins-for-vs-code-eclipse-theia/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-18213",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383748,
  "published_at": "2019-10-23T22:15:10.943+00:00"
}