CVE-2025-52967: Mlflow MLFlow SSRF Vulnerability

MODERATE
Advisory Identifier: GHSA-wxj7-3fx5-pp9m
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CVSS 5.8
CWE-918
Published
Advisory Summary

CVE-2025-52967 is a MODERATE (CVSS 5.8) mlflow ssrf vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Mlflow libraries in the PyPI ecosystem. The issue involves mlflow ssrf via gateway_proxy_handler. Remediation is available by upgrading affected packages to version 3.1.0, 2.22.2.

CVE-2025-52967 at a Glance

CVE Identifier CVE-2025-52967
GHSA Identifier GHSA-wxj7-3fx5-pp9m
Severity MODERATE
CVSS v3.1 Base Score 5.8
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Mlflow
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N).

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

How to Fix CVE-2025-52967

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: 3.1.0 
pip install mlflow>=3.1.0
mlflow fixed: 2.22.2 
pip install mlflow>=2.22.2
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-2025-52967, 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 3.1.0), 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. 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

gateway_proxy_handler in MLflow before 3.1.0 lacks gateway_path validation.

CVE-2025-52967 Affected Mlflow Versions

2 component(s)
Fixed Versions:
3.1.02.22.2
Product / Package Ecosystem Affected Versions Fixed Version
mlflow
pypi/mlflow
PyPI
≥ 3.0.0rc0
< 3.1.0
3.1.0
mlflow
pypi/mlflow
PyPI
< 2.22.2
2.22.2

References

NVD — CVE-2025-52967 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-52967
Mlflow Source Repository REPOSITORY
https://github.com/mlflow/mlflow/issues/15944
Mlflow Source Repository REPOSITORY
https://github.com/mlflow/mlflow/pull/15970
Mlflow Source Repository REPOSITORY
https://github.com/mlflow/mlflow
Mlflow Release RELEASE
https://github.com/mlflow/mlflow/releases/tag/v2.22.2
Mlflow Release RELEASE
https://github.com/mlflow/mlflow/releases/tag/v3.1.0
Mlflow Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2025-52.yaml

Frequently Asked Questions

What is CVE-2025-52967?
CVE-2025-52967 is a security vulnerability in Mlflow involving MLFlow SSRF via gateway_proxy_handler under CWE-918: Server-Side Request Forgery (SSRF).
Which Mlflow versions are affected?
Affected versions include releases prior to 3.1.0, 2.22.2 across affected packages: mlflow.
What version fixes CVE-2025-52967?
Upgrading to 3.1.0, 2.22.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mlflow affected?
Yes, mlflow is affected in releases prior to 3.1.0, 2.22.2. Upgrade your dependency to 3.1.0, 2.22.2 or later.
What is the CVSS score of CVE-2025-52967?
CVE-2025-52967 has a CVSS v3.1 base score of 5.8 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.
What CWE is associated with CVE-2025-52967?
CVE-2025-52967 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check PyPI dependencies for CVE-2025-52967?
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-wxj7-3fx5-pp9m",
  "modified" : "2025-09-12T14:23:38Z",
  "published" : "2025-06-23T15:31:43Z",
  "aliases" : [ "CVE-2025-52967" ],
  "summary" : "MLFlow SSRF via gateway_proxy_handler",
  "details" : "gateway_proxy_handler in MLflow before 3.1.0 lacks gateway_path validation.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "mlflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0rc0"
      }, {
        "fixed" : "3.1.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "mlflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.22.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-52967"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mlflow/mlflow/issues/15944"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mlflow/mlflow/pull/15970"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mlflow/mlflow"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mlflow/mlflow/releases/tag/v2.22.2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mlflow/mlflow/releases/tag/v3.1.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2025-52.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-06-23T21:22:08Z",
    "nvd_published_at" : "2025-06-23T15:15:29Z"
  }
}