VulnerabilityAnalyzed
CVE-2026-33866
MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts.
MEDIUM 5.3EPSS 0.36%
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
Description
MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given experiment can directly query this endpoint and retrieve model artifacts they are not authorized to access. This issue affects MLflow version through 3.10.1
- CVSS 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Affected
- lfprojects/mlflow
- Source
- cvd@cert.pl
References
- https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectorsExploit, Third Party Advisory
- https://cert.pl/en/posts/2026/04/CVE-2026-33865/Third Party Advisory
- https://github.com/mlflow/mlflow/pull/21708Issue Tracking, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.