Security advisory

{
  "id": "4f34bba8dbb93fa2edb23329de377cfd37806c5c5ad3a5f8aedf2e97d28be3f6",
  "url": "https://osv.dev/vulnerability/CVE-2019-18212",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-18212",
    "summary": "XMLLanguageService.java in 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 a remote attacker to write to arbitrary files via Directory Traversal.",
    "evidence": "osv:CVE-2019-18212",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-18212",
      "aliases": [
        "CVE-2019-18212"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "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-2019-18212.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:42.317054253Z",
      "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/567",
        "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-2019-18212",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383750,
  "published_at": "2019-10-23T22:15:10.867+00:00"
}