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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2018-11761

In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion. They were therefore vulnerable to an entity expansion vulnerability which can lead to a denial of service attack.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2018-11761
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 06:25 UTC · Revision 1

Source evidence

CVE-2018-11761

core-osv · Original source

Published 19 Sept 2018, 14:29 UTC

In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion. They were therefore vulnerable to an entity expansion vulnerability which can lead to a denial of service attack.

osv:CVE-2018-11761
Complete source record
{
  "id": "94a89b2f1060582d21aaeae8b606eef64b12deb876582df708c7647b7c4fe5fc",
  "url": "https://osv.dev/vulnerability/CVE-2018-11761",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-11761",
    "summary": "In Apache Tika 0.1 to 1.18, the XML parsers were not configured to limit entity expansion. They were therefore vulnerable to an entity expansion vulnerability which can lead to a denial of service attack.",
    "evidence": "osv:CVE-2018-11761",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-11761",
      "aliases": [
        "CVE-2018-11761",
        "GHSA-6jq2-789q-fff2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/tika",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fe7399ebe5f1d2cca553252577d0925815072b21"
                },
                {
                  "last_affected": "38ff2a986af24ee255f1f91d654ea402f4016696"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:apache:tika:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.1"
                      },
                      {
                        "last_affected": "1.18"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-11761.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:39.308419093Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/5553e10bba5604117967466618f219c0cae710075819c70cfb3fb421%40%3Cdev.tika.apache.org%3E",
        "https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E",
        "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:oracle:business_process_management_suite:12.1.3.0.0:*:*:*:*:*:*:*",
              "cpe:2.3:a:oracle:business_process_management_suite:12.2.1.3.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "oracle:business_process_management_suite",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "12.1.3.0.0"
                  },
                  {
                    "last_affected": "12.1.3.0.0"
                  },
                  {
                    "introduced": "12.2.1.3.0"
                  },
                  {
                    "last_affected": "12.2.1.3.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2018-11761",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 434636,
  "published_at": "2018-09-19T14:29:00.287+00:00"
}