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Apache OpenNLP AbstractModelReader has an OOM Denial of Service via Unbounded Array Allocation
Apache OpenNLP AbstractModelReader has an OOM Denial of Service via Unbounded Array Allocation
Affected packages
- org.apache.opennlp:opennlp-tools— before 2.5.9
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2026-42440
- https://github.com/apache/opennlp
- https://lists.apache.org/thread/s8xlkx1gqbxfsq48py5h6jphjvgqp1jo
- http://www.openwall.com/lists/oss-security/2026/05/01/21
Structured record: https://osv.dev/vulnerability/GHSA-659w-93r5-9j6m
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