CVE-2026-64849 MLflow MLflow: web page flaw
In plain words: A web app can be made to act on someone's behalf or reach places it should not. Stolen sessions, actions taken as the victim, or access to internal systems.
Confirmed exploited by CISA on · US federal patch deadline Sep 2, 2026
What to do
- Install MLflow's security update for MLflow. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- MLflow Server-Side Request Forgery Vulnerability
- Product
- MLflow MLflow
- CISA description
- 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.
- Type of flaw
- Web page flaw (CWE-918)
- Confirmed exploited
- Aug 19, 2026
- US federal patch deadline
- Sep 2, 2026
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Answering about CVE-2026-64849 ·
Questions about CVE-2026-64849
Is CVE-2026-64849 being exploited?
Yes. CISA added CVE-2026-64849 to its Known Exploited Vulnerabilities catalog on Aug 19, 2026, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2026-64849?
Install MLflow's security update for MLflow. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2026-64849?
Only if you use MLflow MLflow. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.