{"api_version":"1","generated_at":"2026-11-08T09:19:55+00:00","cve":"CVE-2026-123356","urls":{"html":"https://cve.report/CVE-2026-123356","api":"https://cve.report/api/cve/CVE-2026-123356.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-123356","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-123356"},"summary":{"title":"GROBID: Unauthenticated `/api/modelTraining` Endpoint Allows Unbounded Thread Pool Creation (DoS)","description":"GROBID is machine learning software for extracting information from scholarly documents. Prior to 0.9.1, the unauthenticated /api/modelTraining endpoint calls GrobidRestProcessTraining.trainModel in GrobidRestProcessTraining.java, where each request creates Executors.newFixedThreadPool(1), submits a training task, and leaves the executor running. Repeated requests permanently retain JVM worker threads and can exhaust process or operating-system thread capacity, degrading or stopping request processing. 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Prior to 0.9.1, the unauthenticated /api/modelTraining endpoint calls GrobidRestProcessTraining.trainModel in GrobidRestProcessTraining.java, where each request creates Executors.newFixedThreadPool(1), submits a training task, and leaves the executor running. Repeated requests permanently retain JVM worker threads and can exhaust process or operating-system thread capacity, degrading or stopping request processing. This issue is fixed in version 0.9.1."}],"metrics":[{"cvssV3_1":{"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-06T18:33:33.986Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/grobidOrg/grobid/security/advisories/GHSA-g2r5-4c8r-c84f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/grobidOrg/grobid/security/advisories/GHSA-g2r5-4c8r-c84f"},{"name":"https://github.com/grobidOrg/grobid/pull/1477","tags":["x_refsource_MISC"],"url":"https://github.com/grobidOrg/grobid/pull/1477"},{"name":"https://github.com/grobidOrg/grobid/commit/3227e9a6a990ec1687173045f119c24e17d10103","tags":["x_refsource_MISC"],"url":"https://github.com/grobidOrg/grobid/commit/3227e9a6a990ec1687173045f119c24e17d10103"},{"name":"https://github.com/grobidOrg/grobid/releases/tag/0.9.1","tags":["x_refsource_MISC"],"url":"https://github.com/grobidOrg/grobid/releases/tag/0.9.1"}],"source":{"advisory":"GHSA-g2r5-4c8r-c84f","discovery":"UNKNOWN"},"title":"GROBID: Unauthenticated `/api/modelTraining` Endpoint Allows Unbounded Thread Pool Creation (DoS)"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-123356","datePublished":"2026-11-06T18:33:33.986Z","dateReserved":"2026-11-05T20:43:10.419Z","dateUpdated":"2026-11-06T18:33:33.986Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-06 19:17:44","lastModifiedDate":"2026-11-06 19:17:44","problem_types":["CWE-400","CWE-400 CWE-400: Uncontrolled Resource Consumption"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"123356","Ordinal":"1","Title":"GROBID: Unauthenticated `/api/modelTraining` Endpoint Allows Unb","CVE":"CVE-2026-123356","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"123356","Ordinal":"1","NoteData":"GROBID is machine learning software for extracting information from scholarly documents. Prior to 0.9.1, the unauthenticated /api/modelTraining endpoint calls GrobidRestProcessTraining.trainModel in GrobidRestProcessTraining.java, where each request creates Executors.newFixedThreadPool(1), submits a training task, and leaves the executor running. Repeated requests permanently retain JVM worker threads and can exhaust process or operating-system thread capacity, degrading or stopping request processing. This issue is fixed in version 0.9.1.","Type":"Description","Title":"GROBID: Unauthenticated `/api/modelTraining` Endpoint Allows Unb"}]}}}