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Vulnerabilities of Apache Software Foundation Apache OpenNLP

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CVE Summary Score Published
CVE-2026-82617 The two built-in name-finder patterns exposed by opennlp.tools.namefind.RegexNameFinderFactory -… 10.0 Critical Sep 11, 2026
CVE-2026-67211 OOM Denial of Service via Unbounded Map Pre-Sizing in Apache OpenNLP SymSpellModelSerializer Versions Affected: -… Not rated Sep 11, 2026
CVE-2026-63317 Arbitrary Class Instantiation via XML Feature Generator Descriptor and Format Name in Apache OpenNLP Versions Affected:… Not rated Jul 24, 2026
CVE-2026-40682 XML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor Versions… Not rated May 4, 2026
CVE-2026-42027 Arbitrary Class Instantiation via Model Manifest in Apache OpenNLP ExtensionLoader Versions Affected: before 1.9.5,… Not rated May 4, 2026
CVE-2026-42440 OOM Denial of Service via Unbounded Array Allocation in Apache OpenNLP AbstractModelReader  Versions Affected:  before… Not rated May 4, 2026
CVE-2017-12620 When loading models or dictionaries that contain XML it is possible to perform an XXE attack, since Apache OpenNLP is… Not rated Oct 2, 2017

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