CVE-2026-33866

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

Predictions

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No vendor mitigations ingested yet for this CVE. The mitigation-content worker queues fetches as references arrive — check back in a few minutes, or see the references list below.

References

• https://nvd.nist.gov/vuln/detail/CVE-2026-33866
• https://github.com/mlflow/mlflow/pull/21708
• https://github.com/mlflow/mlflow/commit/005b959cacda05d1423356cfcbd9ebeda8ff96a7
• https://afine.com/blogs/attacking-mlflow-how-ml-artifacts-become-attack-vectors
• https://cert.pl/en/posts/2026/04/CVE-2026-33865
• https://github.com/mlflow/mlflow
• https://cert.pl/en/posts/2026/04/CVE-2026-33865/