{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-2033", "assignerOrgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "state": "PUBLISHED", "assignerShortName": "zdi", "dateReserved": "2026-02-06T01:08:33.219Z", "datePublished": "2026-02-20T22:12:06.040Z", "dateUpdated": "2026-02-26T14:44:13.266Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "99f1926a-a320-47d8-bbb5-42feb611262e", "shortName": "zdi", "dateUpdated": "2026-02-20T22:12:06.040Z"}, "title": "MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability", "descriptions": [{"lang": "en", "value": "MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MLflow Tracking Server. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of artifact file paths. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26649."}], "affected": [{"vendor": "MLflow", "product": "MLflow", "versions": [{"version": "3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f", "status": "affected"}], "defaultStatus": "unknown"}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "references": [{"url": "https://www.zerodayinitiative.com/advisories/ZDI-26-105/", "name": "ZDI-26-105", "tags": ["x_research-advisory"]}, {"url": "https://github.com/mlflow/mlflow/pull/19260", "name": "vendor-provided URL", "tags": ["vendor-advisory"]}], "dateAssigned": "2026-02-06T01:08:33.246Z", "datePublic": "2026-02-13T14:14:37.649Z", "source": {"lang": "en", "value": "Muhammad Fadilullah Dzaki"}, "metrics": [{"format": "CVSS", "cvssV3_0": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-2033", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-02-25T04:55:54.624367Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-26T14:44:13.266Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "MLflow Tracking Server Artifact Handler Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MLflow Tracking Server. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of artifact file paths. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26649."}, {"lang": "es", "value": "Vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo por salto de directorio en el gestor de artefactos de MLflow Tracking Server. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en instalaciones afectadas de MLflow Tracking Server. No es necesaria la autenticaci\u00f3n para explotar esta vulnerabilidad.\n\nLa falla reside en el manejo de las rutas de archivos de artefactos. El problema se debe a la falta de validaci\u00f3n adecuada de una ruta proporcionada por el usuario antes de usarla en operaciones de archivo. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto de la cuenta de servicio. Fue ZDI-CAN-26649."}], "id": "CVE-2026-2033", "lastModified": "2026-04-15T00:35:42.020", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "zdi-disclosures@trendmicro.com", "type": "Secondary"}]}, "published": "2026-02-20T23:16:03.093", "references": [{"source": "zdi-disclosures@trendmicro.com", "url": "https://github.com/mlflow/mlflow/pull/19260"}, {"source": "zdi-disclosures@trendmicro.com", "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-105/"}], "sourceIdentifier": "zdi-disclosures@trendmicro.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "zdi-disclosures@trendmicro.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "MLflow", "source": "cna", "vendor": "MLflow"}, "product": "mlflow", "vendor": "mlflow"}], "analysis": {"en": {"generated_at": "2026-04-17T17:06:55.734696+00:00", "value": {"mitigation_remediation": ["Upgrade MLflow Tracking Server to the latest patched release that fixes path validation errors.", "If an upgrade is not immediately possible, restrict the Tracking Server\u2019s network exposure to trusted hosts only and block unauthenticated access to the artifact upload endpoint.", "Introduce server\u2011side input filtering or a whitelist for artifact paths to ensure only allowed directories are accessed before file operations."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "All installations of MLflow\u2019s Tracking Server are affected. No specific product versions are listed in the advisory; therefore any publicly available release of MLflow Tracking Server that has not applied the patch is vulnerable.", "description_and_impact": "The flaw lies in the Tracking Server\u2019s artifact handler where a user\u2011supplied file path is accepted without validation. This missing guard allows a remote attacker to traverse directories and execute arbitrary code under the service account\u2019s privileges. The impact is full compromise of confidentiality, integrity, and availability of the affected system, as the attacker can run any code the service account can execute.", "risk_and_exploitability": "The vulnerability scores 8.1 on CVSS and has a 14% EPSS score, indicating it is high severity and has a non\u2011negligible chance of exploitation. The attacker can reach the vulnerable endpoint without authentication, typically via the artifact upload feature exposed over the network. If the server is reachable from untrusted networks, exploitation is straightforward and can be executed remotely."}}}}, "created": "2026-02-23T14:34:57.221707+00:00", "updated": "2026-04-17T17:15:23.717188+00:00", "vendors": ["mlflow", "mlflow$PRODUCT$mlflow"]}