---
title: "CVE-2026-64849: MLflow: Unauthenticated full-read SSRF… | CubePath"
description: "MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Starting in 3.3.0 and prior to 3.15.0…"
language: en
source: https://cubepath.com/security/cve/CVE-2026-64849
---

# CVE-2026-64849: MLflow: Unauthenticated full-read SSRF… | CubePath

## Description

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. Starting in 3.3.0 and prior to 3.15.0, the unauthenticated POST /api/2.0/mlflow/webhooks/{id}/test endpoint calls \_validate\_webhook\_url() in mlflow/utils/validation.py only for the original URL while mlflow/webhooks/delivery.py follows redirects and re-resolves the hostname without pinning the validated address, allowing attackers to reach internal or cloud metadata services and receive response\_status and response\_body. This issue is fixed in version 3.15.0.

Official description from the CVE record, published by GitHub\_M. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-64849)

## Key data

### CVSS 3.1 Critical 9.3

Score published by GitHub\_M in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

| Metric                 | Value   | What it means                                                                       |
| ---------------------- | ------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low     | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None    | No account or privileges are needed.                                                |
| User interaction       | None    | No action from any user is needed.                                                  |
| Scope                  | Changed | The impact can reach other components beyond the vulnerable one.                    |
| Confidentiality impact | High    | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | Low     | Limited effect on the trustworthiness of data.                                      |
| Availability impact    | None    | No effect on availability.                                                          |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.10017 (10.0% probability)

Percentile

95.7%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

MLflow Server-Side Request Forgery Vulnerability

Added to the catalog

Aug 19, 2026

Federal due date

Sep 2, 2026

### CISA assessment as of Aug 20, 2026

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

yes

Technical impact

partial

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-918](https://cwe.mitre.org/data/definitions/918.html) Server-Side Request Forgery

## Affected products

Products listed in the CVE record, as the CNA published them.

- mlflow

  - affected: >= 3.3.0, < 3.15.0

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp…](https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j)
- [github.com/mlflow/mlflow/issues/24179](https://github.com/mlflow/mlflow/issues/24179)
- [github.com/mlflow/mlflow/pull/24258](https://github.com/mlflow/mlflow/pull/24258)
- [github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0…](https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939)
- [github.com/mlflow/mlflow/releases/tag/v3.15.0](https://github.com/mlflow/mlflow/releases/tag/v3.15.0)

## Timeline

1. ID reserved Jul 20, 2026
2. Record published Aug 17, 2026
3. Added to CISA KEV Aug 19, 2026
4. Record last updated Oct 2, 2026

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:10 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)