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CVE-2026-42027

A flaw was found in Apache OpenNLP. An attacker, by providing a specially crafted model archive, can exploit a vulnerability in the ExtensionLoader component. This allows the attacker to force the system to load and initialize any class present on the classpath, executing its static initializer. While not direct remote code execution, this could lead to unintended actions such as network communication or file system operations, depending on the classes available in the environment.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d907d193a35e43ed92d985d1ca4a3532dd4b7e7caf5cf478db4cad8515612ded
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
3

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 9 assertions

{"collectionURL":"https://repo.maven.apache.org/maven2/","defaultStatus":"unaffected","packageName":"org.apache.opennlp:opennlp-tools","product":"Apache OpenNLP","vendor":"Apache Software Foundation","versions":[{"lessThan":"2.5.9","status":"affected","version":"2.0","versionType":"semver"},{"lessThan":"3.0.0-M3","status":"affected","version":"3.0.0-M1","versionType":"semver"},{"lessThan":"1.9.5","status":"affected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-trustyai-service-rhel8","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jbosseapxp"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat JBoss Enterprise Application Platform 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:camel_spring_boot:4"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat build of Apache Camel for Spring Boot 4","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_data_grid:8"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat Data Grid 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"affected","packageName":"rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/7

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"],"defaultStatus":"affected","packageName":"opennlp-tools","product":"Red Hat Fuse 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"affected","packageName":"rhoai/odh-trustyai-service-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/6
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/1/metrics/0/cvssV3_1

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-502","description":"Deserialization of Untrusted Data","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/problemTypes/0/descriptions/0

{"cweId":"CWE-470","description":"CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

9 source assertions
{"collectionURL":"https://repo.maven.apache.org/maven2/","defaultStatus":"unaffected","packageName":"org.apache.opennlp:opennlp-tools","product":"Apache OpenNLP","vendor":"Apache Software Foundation","versions":[{"lessThan":"2.5.9","status":"affected","version":"2.0","versionType":"semver"},{"lessThan":"3.0.0-M3","status":"affected","version":"3.0.0-M1","versionType":"semver"},{"lessThan":"1.9.5","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unaffected","packageName":"rhoai/odh-trustyai-service-rhel8","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jbosseapxp"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:8"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat JBoss Enterprise Application Platform 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:camel_spring_boot:4"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat build of Apache Camel for Spring Boot 4","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_data_grid:8"],"defaultStatus":"unaffected","packageName":"opennlp-tools","product":"Red Hat Data Grid 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"affected","packageName":"rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/7
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"],"defaultStatus":"affected","packageName":"opennlp-tools","product":"Red Hat Fuse 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"affected","packageName":"rhoai/odh-trustyai-service-rhel9","product":"Red Hat OpenShift AI (RHOAI)","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/affected/6

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/1/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-502","description":"Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/problemTypes/0/descriptions/0
{"cweId":"CWE-470","description":"CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/05/01/20"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/0/references/0
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-42027"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/references/0
{"name":"RHBZ#2466527","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466527"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/references/1
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/ltlo4powjfc0w2w2yyl1o5tc7q1gcb2y"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42027.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c982c69e4cc46cf9d2916f106c9ddd6f1e781826cd3a5e520bfb59b6e1999d7e · sha256:8d249163671775e1… · /containers/adp/2/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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