Apache Software Foundation Apache OpenNLP
7 published vulnerabilities name this product.
As the CNAs write it in their CVE records (vendor and product); the versions are theirs.
| CVE | Vulnerable versions | Title | Severity | Published | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| CVE-2026-82617 | 3.0.0-M1 – < 3.0.0-M6 | Apache OpenNLP, Apache OpenNLP: ReDoS / stack exhaustion in RegexNameFinderFactory built-in EMAIL and URL patterns | CRITICAL 10.0 | 0.8 % | ||
| CVE-2026-67211 | 3.0.0-M4 – < 3.0.0-M6 | Apache OpenNLP: OOM DoS via Unbounded Array Allocation in SymSpellModelSerializer | HIGH 7.5 | 0.7 % | ||
| CVE-2026-63317 | 3.0.0-M1 – < 3.0.0-M4 ; < 2.5.11 | Apache OpenNLP: Arbitrary Class Instantiation in GeneratorFactory via Feature Descriptor XML | MEDIUM 5.6 | 0.9 % | ||
| CVE-2026-40682 | 2.0 – < 2.5.9 ; 3.0.0-M1 – < 3.0.0-M3 ; < 1.9.5 | Apache OpenNLP: XXE via Dictionary Parsing in DictionaryEntryPersistor | CRITICAL 9.1 | 0.5 % | ||
| CVE-2026-42027 | 2.0 – < 2.5.9 ; 3.0.0-M1 – < 3.0.0-M3 ; < 1.9.5 | Apache OpenNLP: Arbitrary Class Instantiation via Model Manifest in ExtensionLoader | CRITICAL 9.8 | 0.7 % | ||
| CVE-2026-42440 | 2.0 – < 2.5.9 ; 3.0.0-M1 – < 3.0.0-M3 ; < 1.9.5 | Apache OpenNLP: OOM DoS via Unbounded Array Allocation in AbstractModelReader | HIGH 7.5 | 0.6 % | ||
| CVE-2017-12620 | 1.5.0 to 1.5.3 ; 1.6.0 ; 1.7.0 to 1.7.2 ; … | When loading models or dictionaries that contain XML it is possible to perform an XXE attack, since Apache OpenNLP is a library, this only a | CRITICAL 9.8 | 3.0 % |