CVE-2026-0545

In mlflow/mlflow, the FastAPI job endpoints under `/ajax-api/3.0/jobs/*` are not protected by authentication or authorization when the `basic-auth` app is enabled. This vulnerability affects the latest version of the repository. If job execution is enabled (`MLFLOW_SERVER_ENABLE_JOB_EXECUTION=true`) and any job function is allowlisted, any network client can submit, read, search, and cancel jobs without credentials, bypassing basic-auth entirely. This can lead to unauthenticated remote code execution if allowed jobs perform privileged actions such as shell execution or filesystem changes. Even if jobs are deemed safe, this still constitutes an authentication bypass, potentially resulting in job spam, denial of service (DoS), or data exposure in job results.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://huntr.com/bounties/b2e5b028-9541-4d29-8703-a76f1a3734d8	Third Party Advisory Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:lfprojects:mlflow:-:*:*:*:*:*:*:*

History

21 Apr 2026, 01:45

Type	Values Removed	Values Added
First Time		Lfprojects mlflow Lfprojects
CPE		cpe:2.3:a:lfprojects:mlflow:-:::::::*
CVSS	v2 : ~~unknown~~ v3 : ~~9.1~~	v2 : unknown v3 : 9.8
References	~~() https://huntr.com/bounties/b2e5b028-9541-4d29-8703-a76f1a3734d8 -~~	() https://huntr.com/bounties/b2e5b028-9541-4d29-8703-a76f1a3734d8 - Third Party Advisory, Exploit

03 Apr 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-03 18:16

Updated : 2026-04-21 01:45

NVD link : CVE-2026-0545

Mitre link : CVE-2026-0545

CVE.ORG link : CVE-2026-0545

JSON object : View

Products Affected

lfprojects

mlflow

CWE

CWE-306

Missing Authentication for Critical Function

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