CVE-2026-2614
Arbitrary File Read via Prompt Tag Source Validation Bypass in mlflow/mlflow
Description
A vulnerability in the `_create_model_version()` handler of `mlflow/server/handlers.py` in mlflow/mlflow versions 3.9.0 and earlier allows an unauthenticated remote attacker to read arbitrary files from the server's filesystem. The issue arises when a `CreateModelVersion` request includes the tag `mlflow.prompt.is_prompt`, which bypasses source path validation. This enables an attacker to store an arbitrary local filesystem path as the model version source. The `get_model_version_artifact_handler()` function later uses this source to serve files without verifying the model version's prompt status, leading to a complete confidentiality compromise. This issue is fixed in version 3.10.0.
How to fix CVE-2026-2614
To remediate CVE-2026-2614, upgrade the affected package to a fixed version below.
- —upgrade to 3.10.0 or later
- —upgrade to 3.10.0 or later
- —upgrade to 3.10.0 or later
Is CVE-2026-2614 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 3.10.0
- from 0, < 3.10.0
- from 0, < 3.10.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |