MLflow: LogInputs endpoint bypasses per-run UPDATE authorization in basic-auth

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-69146
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 22:17:26 UTC
Updated2026-08-18 19:17:02 UTC
DescriptionMLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.13.0 until 3.15.0, LogInputs is absent from BEFORE_REQUEST_HANDLERS in the mlflow/server/auth package, allowing any authenticated user to call POST /api/2.0/mlflow/runs/log-inputs for another user's run_id and inject attacker-controlled DatasetInput records into the dataset_inputs lineage metadata without UPDATE permission. This issue is fixed in version 3.15.0.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.002210000 probability, percentile 0.128530000 (date 2026-08-18)

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mlflow Mlflow affected < 3.15.0 Not specified

References

ReferenceSourceLinkTags
github.com/mlflow/mlflow/pull/24291 [email protected] github.com
github.com/mlflow/mlflow/releases/tag/v3.15.0 [email protected] github.com
github.com/mlflow/mlflow/commit/5c34aec5669e2386b38b5ee0855cd61174e27693 [email protected] github.com
github.com/mlflow/mlflow/security/advisories/GHSA-3p64-6gvh-82v5 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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