CVE-2024-3848: Mlflow Path Traversal Vulnerability

HIGH
Advisory Identifier: GHSA-rfqq-wq6w-72jm
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CVSS 7.5
CWE-29 CWE-22
Published
Advisory Summary

CVE-2024-3848 is a HIGH (CVSS 7.5) path traversal vulnerability (CWE-29: Path Traversal: '\..\filename') affecting Mlflow libraries in the PyPI ecosystem. The issue involves mlflow has a local file read/path traversal bypass. Remediation is available by upgrading affected packages to version 2.12.1.

CVE-2024-3848 at a Glance

CVE Identifier CVE-2024-3848
GHSA Identifier GHSA-rfqq-wq6w-72jm
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-29: Path Traversal: '\..\filename'
Affected Product Mlflow
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2024-3848

To remediate this vulnerability, upgrade all affected Mlflow dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

mlflow fixed: 2.12.1 
pip install mlflow>=2.12.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show mlflow

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-3848, inspect your installed packages using pip:

pip show mlflow

Analyze the terminal output to locate any version of Mlflow in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.12.1), your application is affected.

Note: The pip show mlflow command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-29: Path Traversal: '\..\filename', where the product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory. In Mlflow, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A path traversal vulnerability exists in mlflow/mlflow version 2.11.0, identified as a bypass for the previously addressed CVE-2023-6909. The vulnerability arises from the application's handling of artifact URLs, where a '#' character can be used to insert a path into the fragment, effectively skipping validation. This allows an attacker to construct a URL that, when processed, ignores the protocol scheme and uses the provided path for filesystem access. As a result, an attacker can read arbitrary files, including sensitive information such as SSH and cloud keys, by exploiting the way the application converts the URL into a filesystem path. The issue stems from insufficient validation of the fragment portion of the URL, leading to arbitrary file read through path traversal.

CVE-2024-3848 Affected Mlflow Versions

1 component(s)
Fixed Versions:
2.12.1
Product / Package Ecosystem Affected Versions Fixed Version
mlflow
pypi/mlflow
PyPI
≥ 2.9.2
< 2.12.1
2.12.1

References

NVD — CVE-2024-3848 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-3848
Security Fix Commit FIX COMMIT
https://github.com/mlflow/mlflow/commit/f8d51e21523238280ebcfdb378612afd7844eca8
Mlflow Source Repository REPOSITORY
https://github.com/mlflow/mlflow
Mlflow Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2024-244.yaml
huntr.com/bounties/8d5aadaa-5... WEB
https://huntr.com/bounties/8d5aadaa-522f-4839-b41b-d7da362dd610

Frequently Asked Questions

What is CVE-2024-3848?
CVE-2024-3848 is a security vulnerability in Mlflow involving MLflow has a Local File Read/Path Traversal bypass under CWE-29: Path Traversal: '\..\filename'.
Which Mlflow versions are affected?
Affected versions include releases prior to 2.12.1 across affected packages: mlflow.
What version fixes CVE-2024-3848?
Upgrading to 2.12.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mlflow affected?
Yes, mlflow is affected in releases prior to 2.12.1. Upgrade your dependency to 2.12.1 or later.
What is the CVSS score of CVE-2024-3848?
CVE-2024-3848 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2024-3848?
CVE-2024-3848 is classified under CWE-29: Path Traversal: '\..\filename' (The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\..\filename' (leading backslash dot dot) sequences that can resolve to a location that is outside of that directory.).
How can I check PyPI dependencies for CVE-2024-3848?
Run the dependency tree command: 'pip show mlflow'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rfqq-wq6w-72jm",
  "modified" : "2025-04-08T22:00:26Z",
  "published" : "2024-05-16T09:33:08Z",
  "aliases" : [ "CVE-2024-3848" ],
  "summary" : "MLflow has a Local File Read/Path Traversal bypass",
  "details" : "A path traversal vulnerability exists in mlflow/mlflow version 2.11.0, identified as a bypass for the previously addressed CVE-2023-6909. The vulnerability arises from the application's handling of artifact URLs, where a '#' character can be used to insert a path into the fragment, effectively skipping validation. This allows an attacker to construct a URL that, when processed, ignores the protocol scheme and uses the provided path for filesystem access. As a result, an attacker can read arbitrary files, including sensitive information such as SSH and cloud keys, by exploiting the way the application converts the URL into a filesystem path. The issue stems from insufficient validation of the fragment portion of the URL, leading to arbitrary file read through path traversal.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "mlflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.9.2"
      }, {
        "fixed" : "2.12.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-3848"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mlflow/mlflow/commit/f8d51e21523238280ebcfdb378612afd7844eca8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mlflow/mlflow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2024-244.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/8d5aadaa-522f-4839-b41b-d7da362dd610"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22", "CWE-29" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-16T17:47:00Z",
    "nvd_published_at" : "2024-05-16T09:15:14Z"
  }
}