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CVE-2026-42440

OOM Denial of Service via Unbounded Array Allocation in Apache OpenNLP AbstractModelReader  Versions Affected:  before 1.9.5 before 2.5.9 before 3.0.0-M3  Description: The AbstractModelReader methods getOutcomes(), getOutcomePatterns(), and getPredicates() each read a 32-bit signed integer count field from a binary model stream and pass that value directly to an array allocation (new String[numOutcomes], new int[numOCTypes][], new String[NUM_PREDS]) without validating that the value is non
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:154c86105d39eee2bb5ec1f53132d352c14a642a9a4bbfc58b8941960c592dc7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 8 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unknown","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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/6

{"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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/2

{"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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unknown","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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/4

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/1

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unknown","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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/3

{"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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/0
cwe · 2 assertions

{"cweId":"CWE-770","description":"Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/problemTypes/0/descriptions/0

{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

8 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unknown","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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/6
{"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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/2
{"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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unknown","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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_fuse:7"],"defaultStatus":"affected","packageName":"opennlp-maxent","product":"Red Hat Fuse 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/1
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:openshift_ai"],"defaultStatus":"unknown","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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/3
{"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:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/1/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-770","description":"Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/problemTypes/0/descriptions/0
{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/05/01/21"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/0/references/0
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-42440"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/references/0
{"name":"RHBZ#2466494","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2466494"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/adp/2/references/1
{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/s8xlkx1gqbxfsq48py5h6jphjvgqp1jo"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42440.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c9382524451da7dbf77cc5977b63c057bbc652d5d54170611fb5e5bf59cc0665 · sha256:0054c683738d43f0… · /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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