SCA: security update for mlflow (GHSA-f2m9-wcf4-cwwx)

high Tenable Cloud Security Plugin ID 442486

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- 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 `_create_model_downloading_tmp_dir()` function in `mlflow/pyfunc/__init__.py` creates directories with
group-writable permissions (0o770). These insecure permissions allow local attackers to tamper with model
artifacts, such as cloudpickle-serialized Python objects, and achieve arbitrary code execution when the
tampered artifacts are deserialized via `cloudpickle.load()`. This vulnerability is particularly critical
in environments with shared NFS mounts, such as Databricks, where NFS is enabled by default. The issue is
a continuation of the vulnerability class addressed in CVE-2025-10279, which was only partially fixed.
(CVE-2026-4137)

Solution

Update the mlflow library and its related packages to version 3.11.0 or later.

Plugin Details

Severity: High

ID: 442486

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 5/30/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.94

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-4137

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/18/2026

Vulnerability Publication Date: 5/18/2026

Reference Information

CVE: CVE-2026-4137

cwe: CWE-378

Detections

Analytics