CVE-2026-8751

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8751", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-05-16T16:20:44.883Z", "datePublished": "2026-05-17T11:30:10.692Z", "dateUpdated": "2026-05-18T14:19:22.677Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-17T11:30:10.692Z"}, "title": "h2oai h2o-3 JAR Model.java importBinaryModel deserialization", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-502", "lang": "en", "description": "Deserialization"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-20", "lang": "en", "description": "Improper Input Validation"}]}], "affected": [{"vendor": "h2oai", "product": "h2o-3", "versions": [{"version": "7402", "status": "affected"}], "cpes": ["cpe:2.3:a:h2oai:h2o-3:*:*:*:*:*:*:*:*"], "modules": ["JAR Handler"]}], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in h2oai h2o-3 up to 7402. This affects the function importBinaryModel of the file h2o-core/src/main/java/hex/Model.java of the component JAR Handler. Performing a manipulation results in deserialization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 7.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-05-16T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-05-16T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-05-16T18:25:55.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "vulnplusbot (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/364378", "name": "VDB-364378 | h2oai h2o-3 JAR Model.java importBinaryModel deserialization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/364378/cti", "name": "VDB-364378 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/810107", "name": "Submit #810107 | H2O-3 latest Pre-Auth Insecure Deserialization", "tags": ["third-party-advisory"]}, {"url": "https://vulnplus-note.wetolink.com/share/b5nsQg6EcsBS", "tags": ["exploit"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-18T14:19:11.478608Z", "id": "CVE-2026-8751", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-18T14:19:22.677Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-8751", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-18T14:19:11.478608Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-18T14:19:17.302Z"}}], "cna": {"title": "h2oai h2o-3 JAR Model.java importBinaryModel deserialization", "credits": [{"lang": "en", "type": "reporter", "value": "vulnplusbot (VulDB User)"}, {"lang": "en", "type": "coordinator", "value": "VulDB CNA Team"}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 7.3, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 7.3, "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "affected": [{"cpes": ["cpe:2.3:a:h2oai:h2o-3:*:*:*:*:*:*:*:*"], "vendor": "h2oai", "modules": ["JAR Handler"], "product": "h2o-3", "versions": [{"status": "affected", "version": "7402"}]}], "timeline": [{"lang": "en", "time": "2026-05-16T00:00:00.000Z", "value": "Advisory disclosed"}, {"lang": "en", "time": "2026-05-16T02:00:00.000Z", "value": "VulDB entry created"}, {"lang": "en", "time": "2026-05-16T18:25:55.000Z", "value": "VulDB entry last update"}], "references": [{"url": "https://vuldb.com/vuln/364378", "name": "VDB-364378 | h2oai h2o-3 JAR Model.java importBinaryModel deserialization", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/364378/cti", "name": "VDB-364378 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/submit/810107", "name": "Submit #810107 | H2O-3 latest Pre-Auth Insecure Deserialization", "tags": ["third-party-advisory"]}, {"url": "https://vulnplus-note.wetolink.com/share/b5nsQg6EcsBS", "tags": ["exploit"]}], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in h2oai h2o-3 up to 7402. This affects the function importBinaryModel of the file h2o-core/src/main/java/hex/Model.java of the component JAR Handler. Performing a manipulation results in deserialization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "Deserialization"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-20", "description": "Improper Input Validation"}]}], "providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-05-17T11:30:10.692Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8751", "state": "PUBLISHED", "dateUpdated": "2026-05-18T14:19:22.677Z", "dateReserved": "2026-05-16T16:20:44.883Z", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "datePublished": "2026-05-17T11:30:10.692Z", "assignerShortName": "VulDB"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:h2oai:h2o-3:*:*:*:*:*:*:*:*"], "modules": ["JAR Handler"], "product": "h2o-3", "vendor": "h2oai", "versions": [{"status": "affected", "version": "7402"}]}], "source": "cna@vuldb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:h2o:h2o:*:*:*:*:*:*:*:*", "matchCriteriaId": "243F1AAC-368C-4C02-85BC-79B10C37992D", "versionEndIncluding": "7402", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in h2oai h2o-3 up to 7402. This affects the function importBinaryModel of the file h2o-core/src/main/java/hex/Model.java of the component JAR Handler. Performing a manipulation results in deserialization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."}, {"lang": "es", "value": "Una falla de seguridad ha sido descubierta en h2oai h2o-3 hasta la versi\u00f3n 7402. Esto afecta la funci\u00f3n importBinaryModel del archivo h2o-core/src/main/java/hex/Model.java del componente JAR Gestor. Realizar una manipulaci\u00f3n resulta en deserializaci\u00f3n. El ataque es posible de llevar a cabo de forma remota. El exploit ha sido publicado y puede ser utilizado para ataques. El proveedor fue contactado con antelaci\u00f3n sobre esta divulgaci\u00f3n, pero no respondi\u00f3 de ninguna manera."}], "id": "CVE-2026-8751", "lastModified": "2026-10-14T20:10:00.190", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8751", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-18T14:19:11.478608Z", "version": "2.0.3"}}]}, "published": "2026-05-17T12:16:42.533", "references": [{"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/submit/810107"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/vuln/364378"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/vuln/364378/cti"}, {"source": "cna@vuldb.com", "tags": ["Broken Link"], "url": "https://vulnplus-note.wetolink.com/share/b5nsQg6EcsBS"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-502"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "7402"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "h2o-3", "source": "cna", "vendor": "h2oai"}, "product": "h2o-3", "vendor": "h2oai"}], "created": "2026-05-17T12:30:15.610632+00:00", "updated": "2026-05-17T12:30:15.841094+00:00", "vendors": ["h2oai", "h2oai$PRODUCT$h2o-3"]}