A vulnerability was found in Apache OpenNLP up to 2.5.8/3.0.0-M2 and classified as problematic. The affected element is the function DictionaryEntryPersistor of the component Dictionary Parser. Executing a manipulation can lead to xml external entity reference.

The identification of this vulnerability is CVE-2026-40682. The attack may be launched remotely. There is no exploit available.

It is suggested to upgrade the affected component.