CVE-2026-64849: MLflow Server-Side Request Forgery Vulnerability

CVE-2026-64849: MLflow Server-Side Request Forgery Vulnerability
Vendor/project: MLflow
Product: MLflow
Date added to KEV: 2026-08-19
Due date: 2026-09-02
Known ransomware use: Unknown
CWEs: CWE-918
MLflow contains a server-side request forgery vulnerability that can allow attackers to reach internal or cloud metadata services and receive response_status and response_body.

Required action:
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes:
https://github.com/mlflow/mlflow/pull/24258 ; https://github.com/mlflow/mlflow/issues/24179 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-64849
CISA KEV catalog entry for CVE-2026-64849
Original source: https://github.com/mlflow/mlflow/pull/24258