# CVE-2026-64849

## Summary

- **CVE ID:** CVE-2026-64849
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N)
- **CWE:** CWE-918
- **Published:** Aug 17, 2026
- **Last Modified:** Aug 20, 2026

## Description

MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. 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.

## Affected Products

- mlflow — mlflow (< 3.15.0)

## References

- [CNA](https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j)
- [CNA](https://github.com/mlflow/mlflow/issues/24179)
- [CNA](https://github.com/mlflow/mlflow/pull/24258)
- [CNA](https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939)
- [CNA](https://github.com/mlflow/mlflow/releases/tag/v3.15.0)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 16.41%
- **EPSS Percentile:** 96.8

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Aug 19, 2026
- **Due Date:** Sep 2, 2026

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._