CVE-2026-2652— Authentication Bypass in mlflow/mlflow
Possible ATT&CK Techniques 1AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| mlflow | mlflow/mlflow | unspecified< 3.10.0 | affected |
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I. Basic Information for CVE-2026-2652
Vulnerability Information
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Vulnerability Title
Authentication Bypass in mlflow/mlflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用基本弱点进行的认证绕过
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| mlflow | mlflow/mlflow | unspecified ~ 3.10.0 | - |
II. Public POCs for CVE-2026-2652
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: mlflow/mlflow
- CVE-2026-2614
Arbitrary File Read via Prompt Tag Source Validation Bypass - CVE-2026-2393
Server-Side Request Forgery (SSRF) in mlflow/mlflow - CVE-2026-0545
Missing Authentication for Critical Function in mlflow/mlflo - CVE-2026-0596
Command Injection in mlflow/mlflow - CVE-2025-15379
Command Injection in mlflow/mlflow
Same vendor: mlflow
- CVE-2026-2614
Arbitrary File Read via Prompt Tag Source Validation Bypass - CVE-2026-2393
Server-Side Request Forgery (SSRF) in mlflow/mlflow - CVE-2026-33866
Authorization Bypass in MLflow AJAX Endpoint - CVE-2026-33865
Stored XSS via unsafe YAML parsing in MLflow - CVE-2026-0545
Missing Authentication for Critical Function in mlflow/mlflo
Same weakness: CWE-305
- CVE-2026-6266
Aap-controller: aap-gateway: account hijacking and unauthori - CVE-2026-4670
Improper Authentication vulnerability in Progress MOVEit Aut - CVE-2026-33472
Cryptomator Hub OAuth token exchange HTTP downgrade via getA - CVE-2026-20152
Cisco Secure Web Appliance Authentication Service Traffic By - CVE-2026-33892
Siemens Industrial Edge Management 安全漏洞
V. Comments for CVE-2026-2652
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