CVE-2026-33866MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts.
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No exploitation reported and no EPSS estimate yet.
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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
- 4.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
lfprojects mlflow lfprojects:mlflow | through 3.10.1 | NVD |
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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.