{"schema_version":1,"title":"Apache Opennlp vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 5 vulnerabilities in Apache Opennlp: 0 in the last 7 days and 2 in the last 90 days, 2 of them critical and 0 exploited in the wild. The most recent, CVE-2026-67211, was published on 11 September 2026.","url":"https://junglewise.ai/threats/technologies/opennlp","json_url":"https://junglewise.ai/threats/technologies/opennlp.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/opennlp","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":2,"all_time":5,"critical":2,"exploited":0,"last_7_days":0,"last_30_days":1,"last_90_days":2,"last_365_days":5},"latest":[{"cve":"CVE-2026-67211","cvss":7.5,"epss":0.0074,"slug":"cve-2026-67211-apache-opennlp-symspellmodelserializer-denial-of-service-via","title":"Apache OpenNLP SymSpellModelSerializer denial of service via unbounded map pre-sizing","severity":"high","exploited":false,"published_at":"2026-09-11T18:16:57.47+00:00","url":"https://junglewise.ai/threats/cve-2026-67211-apache-opennlp-symspellmodelserializer-denial-of-service-via"},{"cve":"CVE-2026-63317","cvss":0,"slug":"cve-2026-63317-apache-opennlp-arbitrary-class-instantiation-in-xml-feature","title":"Apache OpenNLP arbitrary class instantiation in XML Feature Generator","severity":"info","exploited":false,"published_at":"2026-07-24T09:16:25.273+00:00","url":"https://junglewise.ai/threats/cve-2026-63317-apache-opennlp-arbitrary-class-instantiation-in-xml-feature"},{"cve":"CVE-2026-42440","cvss":7.5,"epss":0.0107,"slug":"cve-2026-42440-apache-opennlp-denial-of-service-in-abstractmodelreader","title":"Apache OpenNLP denial of service in AbstractModelReader","severity":"high","exploited":false,"published_at":"2026-05-04T17:16:26.147+00:00","url":"https://junglewise.ai/threats/cve-2026-42440-apache-opennlp-denial-of-service-in-abstractmodelreader"},{"cve":"CVE-2026-42027","cvss":9.8,"epss":0.0127,"slug":"cve-2026-42027-apache-opennlp-arbitrary-class-instantiation-in-extensionloader","title":"Apache OpenNLP arbitrary class instantiation in ExtensionLoader","severity":"critical","exploited":false,"published_at":"2026-05-04T17:16:24.123+00:00","url":"https://junglewise.ai/threats/cve-2026-42027-apache-opennlp-arbitrary-class-instantiation-in-extensionloader"},{"cve":"CVE-2026-40682","cvss":9.1,"epss":0.0084,"slug":"cve-2026-40682-apache-opennlp-xxe-in-dictionaryentrypersistor","title":"Apache OpenNLP XXE in DictionaryEntryPersistor","severity":"critical","exploited":false,"published_at":"2026-05-04T17:16:23.657+00:00","url":"https://junglewise.ai/threats/cve-2026-40682-apache-opennlp-xxe-in-dictionaryentrypersistor"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Apache Tomcat","slug":"tomcat","vulnerabilities":67,"url":"https://junglewise.ai/threats/technologies/tomcat"},{"name":"Apache Airflow","slug":"airflow","vulnerabilities":61,"url":"https://junglewise.ai/threats/technologies/airflow"},{"name":"Apache Camel","slug":"camel","vulnerabilities":40,"url":"https://junglewise.ai/threats/technologies/camel"},{"name":"Apache Traffic Server","slug":"traffic-server","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/traffic-server"},{"name":"Apache HTTP Server","slug":"http-server","vulnerabilities":31,"url":"https://junglewise.ai/threats/technologies/http-server"},{"name":"Apache CloudStack","slug":"cloudstack","vulnerabilities":25,"url":"https://junglewise.ai/threats/technologies/cloudstack"},{"name":"Apache Ofbiz","slug":"ofbiz","vulnerabilities":22,"url":"https://junglewise.ai/threats/technologies/ofbiz"},{"name":"Apache ActiveMQ","slug":"activemq","vulnerabilities":19,"url":"https://junglewise.ai/threats/technologies/activemq"},{"name":"Apache Storm","slug":"storm","vulnerabilities":17,"url":"https://junglewise.ai/threats/technologies/storm"},{"name":"Apache Apisix","slug":"apisix","vulnerabilities":16,"url":"https://junglewise.ai/threats/technologies/apisix"},{"name":"Apache Thrift","slug":"thrift","vulnerabilities":16,"url":"https://junglewise.ai/threats/technologies/thrift"},{"name":"Apache ActiveMQ Artemis","slug":"activemq-artemis","vulnerabilities":15,"url":"https://junglewise.ai/threats/technologies/activemq-artemis"}],"technology":{"hub":true,"name":"Apache Opennlp","slug":"opennlp","vendor":{"name":"Apache","slug":"apache","url":"https://junglewise.ai/threats/vendors/apache"},"aliases":[],"category":"library","description":"A machine learning based toolkit for natural language processing.","url":"https://junglewise.ai/threats/technologies/opennlp"},"most_severe":[{"cve":"CVE-2026-42027","cvss":9.8,"epss":0.0127,"slug":"cve-2026-42027-apache-opennlp-arbitrary-class-instantiation-in-extensionloader","title":"Apache OpenNLP arbitrary class instantiation in ExtensionLoader","severity":"critical","exploited":false,"published_at":"2026-05-04T17:16:24.123+00:00","url":"https://junglewise.ai/threats/cve-2026-42027-apache-opennlp-arbitrary-class-instantiation-in-extensionloader"},{"cve":"CVE-2026-40682","cvss":9.1,"epss":0.0084,"slug":"cve-2026-40682-apache-opennlp-xxe-in-dictionaryentrypersistor","title":"Apache OpenNLP XXE in DictionaryEntryPersistor","severity":"critical","exploited":false,"published_at":"2026-05-04T17:16:23.657+00:00","url":"https://junglewise.ai/threats/cve-2026-40682-apache-opennlp-xxe-in-dictionaryentrypersistor"},{"cve":"CVE-2026-42440","cvss":7.5,"epss":0.0107,"slug":"cve-2026-42440-apache-opennlp-denial-of-service-in-abstractmodelreader","title":"Apache OpenNLP denial of service in AbstractModelReader","severity":"high","exploited":false,"published_at":"2026-05-04T17:16:26.147+00:00","url":"https://junglewise.ai/threats/cve-2026-42440-apache-opennlp-denial-of-service-in-abstractmodelreader"},{"cve":"CVE-2026-67211","cvss":7.5,"epss":0.0074,"slug":"cve-2026-67211-apache-opennlp-symspellmodelserializer-denial-of-service-via","title":"Apache OpenNLP SymSpellModelSerializer denial of service via unbounded map pre-sizing","severity":"high","exploited":false,"published_at":"2026-09-11T18:16:57.47+00:00","url":"https://junglewise.ai/threats/cve-2026-67211-apache-opennlp-symspellmodelserializer-denial-of-service-via"},{"cve":"CVE-2026-63317","cvss":0,"slug":"cve-2026-63317-apache-opennlp-arbitrary-class-instantiation-in-xml-feature","title":"Apache OpenNLP arbitrary class instantiation in XML Feature Generator","severity":"info","exploited":false,"published_at":"2026-07-24T09:16:25.273+00:00","url":"https://junglewise.ai/threats/cve-2026-63317-apache-opennlp-arbitrary-class-instantiation-in-xml-feature"}],"generated_at":"2026-09-26T14:07:00.158513+00:00"}