CVE-2026-33865

MEDIUM EPSS 12.2%
Published Apr 7, 20262mo ago · Modified Jun 17, 20262w ago
5.1 CVSS 4.0
Medium
Find Similar
Published Apr 7, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

MLflow is vulnerable to Stored Cross-Site Scripting (XSS) caused by unsafe parsing of YAML-based MLmodel artifacts in its web interface. An authenticated attacker can upload a malicious MLmodel file containing a payload that executes when another user views the artifact in the UI. This allows actions such as session hijacking or performing operations on behalf of the victim. This issue affects MLflow version through 3.10.1

CVSS Details

Base Score
5.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
12.2% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
lfprojectsmlflow* ≤3.10.1

References 3

  • afine.com https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectors
    ExploitThird Party Advisory
  • cert.pl https://cert.pl/en/posts/2026/04/CVE-2026-33865/
    Third Party Advisory
  • github.com https://github.com/mlflow/mlflow/pull/21435
    Issue TrackingPatch

Remediation

  • github.com https://github.com/mlflow/mlflow/pull/21435
    Issue TrackingPatch