{"data":{"id":"cdc30758-e5a8-4348-9e1b-8c8a7c6f00b3","title":"CVE-2026-4137: In mlflow/mlflow versions prior to 3.11.0, the `get_or_create_nfs_tmp_dir()` function in `mlflow/utils/file_utils.py`…","summary":"In mlflow/mlflow versions prior to 3.11.0, the `get_or_create_nfs_tmp_dir()` function in `mlflow/utils/file_utils.py` creates temporary directories with world-writable permissions (0o777), and `_create_model_downloading_tmp_dir()` in `mlflow/pyfunc/__init__.py` creates directories with group-writable permissions (0o770). Local attackers can tamper with cloudpickle-serialized model artifacts and achieve arbitrary code execution when they are loaded via `cloudpickle.load()`. The source calls this especially critical on shared NFS mounts such as Databricks, where NFS is enabled by default, and notes it continues the class addressed in CVE-2025-10279, which was only partially fixed.","solution":"Fixed in 3.11.0 (all versions prior to 3.11.0 are affected).","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-4137","publishedAt":"2026-05-18T21:16:40.710Z","cveId":"CVE-2026-4137","cweIds":["CWE-378"],"cvssScore":null,"cvssSeverity":null,"severity":"high","attackType":["supply_chain"],"issueType":"vulnerability","affectedPackages":["mlflow@>= 1.26.0, < 3.11.0 (fixed: 3.11.0)"],"affectedPackageNames":["mlflow"],"affectedPackageRefs":["pypi:mlflow"],"affectedVendors":[],"affectedVendorsRaw":["MLflow","Databricks"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"mlflow insecure temporary directory permissions enable code execution","headlinePromptVersion":"h1","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00162,"epssCheckedAt":"2026-10-14T18:05:58.202Z","kevDateAdded":null,"advisoryAliases":["GHSA-f2m9-wcf4-cwwx"],"affectedPackagesSource":"ghsa","affectedPackagesCheckedAt":"2026-10-10T03:48:14.712Z","patchAvailable":true,"disclosureDate":"2026-05-18T21:16:40.710Z","capecIds":null,"crossRefCount":0,"attackSophistication":"moderate","impactType":["integrity","confidentiality"],"aiComponentTargeted":"framework","llmSpecific":false,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":["AML.T0010"]}}