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apache opennlp
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apache opennlp
4 known vulnerabilities across versions
Vulnerabilities are listed by affected version. Select any CVE for the full briefing and its intelligence graph.
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CVE-2026-42440
< 2.5.9
OOM Denial of Service via Unbounded Array Allocation in Apache OpenNLP AbstractModelReader Versions Affected: before 2.5.9
7.5
HIGH
CVE-2026-42027
< 2.5.9
Arbitrary Class Instantiation via Model Manifest in Apache OpenNLP ExtensionLoader Versions Affected: before 2.5.9, before 3.
9.8
CRITICAL
CVE-2026-40682
< 2.5.9
XML External Entity (XXE) via Unsanitized Dictionary Parsing in Apache OpenNLP DictionaryEntryPersistor Versions Affected: befor
9.1
CRITICAL
CVE-2017-12620
all versions
When loading models or dictionaries that contain XML it is possible to perform an XXE attack, since Apache OpenNLP is a library, t
9.8
CRITICAL
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