Skip to main content
CRITICAL CISA KEV

CVE-2026-64849

CVSS v3

9.3

CRITICAL

EPSS Score

1.1 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

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

CISA Known Exploited Vulnerability

Date Added
2026-08-19
Patch Due Date
2026-09-02
Ransomware Use
Unknown

Technical details

CVSS v3 Vector
3.1
Published
2026-08-17
Last Modified
2026-08-19

Frequently asked questions

What is CVE-2026-64849?

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

Is CVE-2026-64849 actively exploited?

Yes. CVE-2026-64849 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-09-02.

What is the CVSS score for CVE-2026-64849?

CVE-2026-64849 has a CVSS v3 base score of 9.3 (CRITICAL severity), with vector string 3.1.

Is CVE-2026-64849 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.

Check an IPSearch CVEsSIEM & TIP integrations

No credit card required · 500 free checks/month · Free API key

Other 2026 vulnerabilities worth triaging

Ranked by exploit probability (EPSS).

Back to CVE Database