CVE-2026-64849
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.
Fix
Public exploits 5
- BiuTrap/CVE-2026-64849 PoC on GitHub
- codeb0ssx/CVE-2026-64849-PoC PoC on GitHub
- isaca0315/CVE-2026-64849-poc-lab PoC on GitHub
- maxprog-svg/CVE-2026-64849 PoC on GitHub
- zavisco/CVE-2026-64849.yaml PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
CISA KEV required action · due 2026-09-02
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.
Added to the catalog 2026-08-19. CISA KEV
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939 Patch
- https://github.com/mlflow/mlflow/issues/24179 Exploit, Issue Tracking, Mitigation
- https://github.com/mlflow/mlflow/pull/24258 Issue Tracking, Patch
- https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.3 · in KEV · lfprojectsNVD modified 2026-10-26 13:10
Affected (CPE criteria) 1
cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*
References 6
- https://github.com/mlflow/mlflow/commit/ba949522477cbd5915aa55d29b0cfad7d5ddf939 Patch
- https://github.com/mlflow/mlflow/issues/24179 Exploit, Issue Tracking, Mitigation
- https://github.com/mlflow/mlflow/pull/24258 Issue Tracking, Patch
- https://github.com/mlflow/mlflow/releases/tag/v3.15.0 Release Notes
- https://github.com/mlflow/mlflow/security/advisories/GHSA-7gwp-5pfp-969j Exploit, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-64849 US Government Resource