CVE-2026-2652

Published: Mag 15, 2026 Last Modified: Mag 18, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,6
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: low

Description

AI Translation Available

A vulnerability in mlflow/mlflow versions 3.9.0 and earlier allows unauthenticated access to certain FastAPI routes when the server is started with authentication enabled (`--app-name basic-auth`) and served via uvicorn (ASGI). The FastAPI permission middleware only enforces authentication on `/gateway/` routes, leaving other routes such as the Job API (`/ajax-api/3.0/jobs/*`) and the OpenTelemetry trace ingestion API (`/v1/traces`) unprotected. This allows unauthenticated remote attackers to submit jobs, read job results, cancel running jobs, and inject arbitrary trace data into experiments. The issue arises from an architectural mismatch between Flask and FastAPI authentication mechanisms, where the `_find_fastapi_validator()` function fails to handle non-`/gateway/` paths, resulting in a complete authentication bypass. This vulnerability is fixed in version 3.10.0.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0009
Percentile
0,2th
Updated

EPSS Score Trend (Last 6 Days)

305

Authentication Bypass by Primary Weakness

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control
Potential Impacts:
Bypass Protection Mechanism
Applicable Platforms
All platforms may be affected
View CWE Details
Application

Mlflow by Lfprojects

Product Information
Vendor Lfprojects
Product Mlflow
Version Range Affected
To 3.10.0 (exclusive)
cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://huntr.com/bounties/5aeff5f0-49c7-4180-b5cb-c9a046f1…
https://huntr.com/bounties/5aeff5f0-49c7-4180-b5cb-c9a046f16756
https://github.com/mlflow/mlflow/commit/bb62e773263c14e9ba4…
https://github.com/mlflow/mlflow/commit/bb62e773263c14e9ba4d1a82fe72d0de2442c6aa
https://huntr.com/bounties/5aeff5f0-49c7-4180-b5cb-c9a046f1…
https://huntr.com/bounties/5aeff5f0-49c7-4180-b5cb-c9a046f16756