CVE-2026-42027
1 advisory.
Maven/org.apache.opennlp:opennlp-tools CVE-2026-42027: critical 9.8, EPSS 1.27%
Apache OpenNLP ExtensionLoader Vulnerable to Arbitrary Class Instantiation via Model Manifest
Action: Upgrade org.apache.opennlp:opennlp-tools to 1.9.5 (1.x), 2.5.9 (2.x) or 3.0.0-M3 (3.x) or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 2.0.0 | 2.5.9 | - |
| 3.0.0-M1 | 3.0.0-M3 | - |
| 0 | 1.9.5 | - |
Fixed versions
| 2.5.9 | 3.0.0-M3 | 1.9.5 |
Sources
- osv: GHSA-cx4m-2p55-rw7j
- https://nvd.nist.gov/vuln/detail/CVE-2026-42027
- https://access.redhat.com/errata/RHSA-2026:65126
- https://access.redhat.com/security/cve/CVE-2026-42027
- https://bugzilla.redhat.com/show_bug.cgi?id=2466527
- https://github.com/apache/opennlp
- https://lists.apache.org/thread/ltlo4powjfc0w2w2yyl1o5tc7q1gcb2y
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42027.json
- http://www.openwall.com/lists/oss-security/2026/05/01/20
CVE-2026-42027 · published · modified · JSON