{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-127202",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-11-12T16:30:10.902Z",
        "datePublished": "2026-11-12T16:37:02.081Z",
        "dateUpdated": "2026-11-12T16:37:02.081Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-11-12T16:37:02.081Z"
            },
            "title": "MLflow < 3.18.0 Path Traversal via model_id in log_outputs API",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "MLflow before 3.18.0 using the FileStore backend contains a path traversal vulnerability that allows unauthenticated remote attackers to write files outside the intended run directory by supplying a malicious model_id parameter to the log outputs API. Attackers can exploit the unvalidated model_id containing ../ sequences via the POST /api/3.0/mlflow/runs/outputs endpoint to create directories and write a meta.yaml file at arbitrary filesystem locations, limited only by the server account's permissions. FileStore was the default backend before 3.7.0 and is opt-in afterward through MLFLOW_ALLOW_FILE_STORE."
                }
            ],
            "tags": [
                "x_open-source"
            ],
            "datePublic": "2026-10-26T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "cweId": "CWE-22",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "vendor": "mlflow",
                    "product": "mlflow",
                    "packageURL": "pkg:pypi/mlflow",
                    "repo": "https://github.com/mlflow/mlflow",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver",
                            "lessThan": "3.18.0"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 6.3,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
                    }
                },
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "availabilityImpact": "NONE",
                        "version": "3.1",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 5.3,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/mlflow/mlflow/releases/tag/v3.18.0",
                    "name": "Release Notes",
                    "tags": [
                        "release-notes"
                    ]
                },
                {
                    "url": "https://github.com/mlflow/mlflow/pull/27131",
                    "name": "Pull Request",
                    "tags": [
                        "issue-tracking",
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/mlflow/mlflow/commit/ab5fc795eedc22348253cf687818cf2a16c15282",
                    "name": "Patch Commit",
                    "tags": [
                        "patch",
                        "issue-tracking"
                    ]
                },
                {
                    "url": "https://www.vulncheck.com/advisories/mlflow-path-traversal-via-model-id-in-log-outputs-api",
                    "name": "VulnCheck Advisory: MLflow < 3.18.0 Path Traversal via model_id in log_outputs API",
                    "tags": [
                        "third-party-advisory"
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Florian Kabashi",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck"
            }
        }
    }
}