CVE catalog
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` creates temporary directories with world-writable permissions (0o777), and the `_c
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.19% · Oct 25, 2026
A flaw was found in mlflow/mlflow. Insecure permissions on temporary directories allow local attackers to tamper with model artifacts, such as cloudpickle-serialized Python objects. This manipulation can lead to arbitrary code execution when the tampered artifacts are deserialized. This vulnerability is particularly critical in environments with shared Network File System (NFS) mounts. mlflow/mlflow: mlflow/mlflow: Arbitrary code execution via insecure temporary directory permissions Important: This flaw in MLflow allows local attackers to achieve arbitrary code execution by tampering with model artifacts in insecurely permissioned temporary directories. This is particularly critical in environments with shared Network File System (NFS) mounts, where default configurations may expose these directories to unauthorized modification. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | mlflow | Not reported | 3.11.0 | fixed |
| Pip | mlflow | Not reported | 3.11.0 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | mlflow | cpe | Not reported | 3.11.0 | Not reported | Not reported | Not reported |
| Pip | mlflow | pip | Not reported | 3.11.0 | Not reported | GHSA-F2M9-WCF4-CWWX | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: