CVE Tools
Sign in

CVE-2026-2651

Missing Authorization Validation in mlflow/mlflow

Published: May 25, 2026Updated: Jun 4, 2026 Sources: CVE List NVD BDUCWE-862
NVD MITRE
9.0CVSSCRITICAL
EPSS Score
0.4%
Top 70.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the `--serve-artifacts` mode is enabled. The authorization logic does not enforce resource-level permission checks for `/mlflow-artifacts/mpu/*` endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-862

Affected Products

MLflowLF Projects, LLC
Mixed
AI / ML / notebook-mlops
mlflow/mlflowmlflow
LibraryLibrary
AI / ML / ml-framework
mlflowlfprojects
On-premLibrary
AI / ML / notebook-mlops
lf projects, llcoss-projectAI / ML
mlflowoss-projectAI / MLaka mlflow
lfprojectsoss-projectAI / MLaka mlflow, valkey, model context protocol servers, mcp servers

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f&#13;
github.com
https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dc
huntr.com
https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966f
github.com

Timeline

Published
May 25, 2026
Last Updated
Jun 4, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-2651 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows