{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-05-04T17:36:52.681Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/05/01/19"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 9.1,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-40682",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-05T15:01:49.614474Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-05T15:02:14.483Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.maven.apache.org/maven2/",
          "defaultStatus": "unaffected",
          "packageName": "org.apache.opennlp:opennlp-tools",
          "product": "Apache OpenNLP",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThan": "2.5.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "3.0.0-M3",
              "status": "affected",
              "version": "3.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Subramanian S"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003e\u003cstrong\u003eXML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor\u003c/strong\u003e\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eVersions Affected:\u003c/strong\u003e before 2.5.9, before 3.0.0-M3\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eDescription:\u003c/strong\u003e The \u003ccode\u003eDictionaryEntryPersistor\u003c/code\u003e class initializes a static \u003ccode\u003eSAXParserFactory\u003c/code\u003e at class-load time without enabling \u003ccode\u003eFEATURE_SECURE_PROCESSING\u003c/code\u003e or disabling DTD processing. When \u003ccode\u003ecreate(InputStream, EntryInserter)\u003c/code\u003e is invoked, the only feature set on the \u003ccode\u003eXMLReader\u003c/code\u003e is namespace support \u2014 external entity resolution and DOCTYPE declarations remain fully enabled. An attacker who can supply a crafted dictionary file (e.g., a stop-word list or domain dictionary) containing a malicious DOCTYPE declaration can trigger local file disclosure via \u003ccode\u003efile://\u003c/code\u003e entity references or server-side request forgery via \u003ccode\u003ehttp://\u003c/code\u003e entity references during SAX parsing, before the application processes a single dictionary entry. This is inconsistent with the project\u0027s own \u003ccode\u003eXmlUtil.createSaxParser()\u003c/code\u003e helper, which correctly sets \u003ccode\u003eFEATURE_SECURE_PROCESSING\u003c/code\u003e and \u003ccode\u003edisallow-doctype-decl\u003c/code\u003e and is used by all other XML parsing paths in the codebase. The public \u003ccode\u003eDictionary(InputStream)\u003c/code\u003e constructor delegates directly to this method and is the documented API for loading user-supplied dictionaries, making untrusted input a realistic scenario.\u003c/p\u003e\n\u003cp\u003e\u003cstrong\u003eMitigation:\u003c/strong\u003e 2.x users should upgrade to 2.5.9. 3.x users should upgrade to 3.0.0-M3. Users who cannot upgrade immediately should ensure that all dictionary files are sourced from trusted origins and should consider wrapping the \u003ccode\u003eDictionary(InputStream)\u003c/code\u003e constructor with input validation that rejects any XML containing a DOCTYPE declaration before it reaches the parser.\u003cbr\u003e\u003c/p\u003e"
            }
          ],
          "value": "XML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor\n\n\nVersions Affected: before 2.5.9, before 3.0.0-M3\n\n\nDescription: The DictionaryEntryPersistor class initializes a static SAXParserFactory at class-load time without enabling FEATURE_SECURE_PROCESSING or disabling DTD processing. When create(InputStream, EntryInserter) is invoked, the only feature set on the XMLReader is namespace support \u2014 external entity resolution and DOCTYPE declarations remain fully enabled. An attacker who can supply a crafted dictionary file (e.g., a stop-word list or domain dictionary) containing a malicious DOCTYPE declaration can trigger local file disclosure via file:// entity references or server-side request forgery via http:// entity references during SAX parsing, before the application processes a single dictionary entry. This is inconsistent with the project\u0027s own XmlUtil.createSaxParser() helper, which correctly sets FEATURE_SECURE_PROCESSING and disallow-doctype-decl and is used by all other XML parsing paths in the codebase. The public Dictionary(InputStream) constructor delegates directly to this method and is the documented API for loading user-supplied dictionaries, making untrusted input a realistic scenario.\n\n\nMitigation: 2.x users should upgrade to 2.5.9. 3.x users should upgrade to 3.0.0-M3. Users who cannot upgrade immediately should ensure that all dictionary files are sourced from trusted origins and should consider wrapping the Dictionary(InputStream) constructor with input validation that rejects any XML containing a DOCTYPE declaration before it reaches the parser."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "text": "moderate"
            },
            "type": "Textual description of severity"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-611",
              "description": "CWE-611 Improper Restriction of XML External Entity Reference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-04T16:55:55.834Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.apache.org/thread/r6jpt0qr9nj67gqhppqg7jxf8vsbo0w6"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntryPersistor",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-40682",
    "datePublished": "2026-05-04T16:55:55.834Z",
    "dateReserved": "2026-04-14T17:21:09.189Z",
    "dateUpdated": "2026-05-05T15:02:14.483Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}