Security advisory

{
  "id": "13676e3d0f3af67340e83eb44f6d2cba1670db7848e3072167701817cad84c09",
  "url": "https://osv.dev/vulnerability/CVE-2018-1000823",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-1000823",
    "summary": "exist version <= 5.0.0-RC4 contains a XML External Entity (XXE) vulnerability in XML Parser for REST Server that can result in Disclosure of confidential data, denial of service, SSRF, port scanning.",
    "evidence": "osv:CVE-2018-1000823",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-1000823",
      "aliases": [
        "CVE-2018-1000823",
        "GHSA-jxm5-5xcw-h57q"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/exist-db/exist",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5a27d10ba1710c1df751344b53ac6e4cb4778e3b"
                },
                {
                  "introduced": "141b5c7cac4684f29803d6a44993a5f6c4a7c55d"
                },
                {
                  "last_affected": "af021183515d209fd22bf08255aaab3d311a83c1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:exist-db:exist:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:exist-db:exist:5.0.0:rc1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0-rc1"
                      },
                      {
                        "last_affected": "5.0.0-rc1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:exist-db:exist:5.0.0:rc2:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0-rc2"
                      },
                      {
                        "last_affected": "5.0.0-rc2"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:exist-db:exist:5.0.0:rc3:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0-rc3"
                      },
                      {
                        "last_affected": "5.0.0-rc3"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:exist-db:exist:5.0.0:rc4:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0.0-rc4"
                      },
                      {
                        "last_affected": "5.0.0-rc4"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "5.0.0-rc1",
            "5.0.0-rc2",
            "5.0.0-rc3",
            "5.0.0-rc4",
            "eXist-5.0.0-RC4",
            "eXist-5.0.0-RC3",
            "eXist-5.0.0-RC2",
            "eXist-5.0.0-RC1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-1000823.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:19.976071874Z",
      "provider": "osv",
      "references": [
        "https://0dd.zone/2018/10/27/exist-XXE/",
        "https://github.com/eXist-db/exist/issues/2180"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-1000823",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381558,
  "published_at": "2018-12-20T15:29:00.907+00:00"
}