CVE-2026-2614
Arbitrary File Read via Prompt Tag Source Validation Bypass in mlflow/mlflow
At a glance
- Source
- NVD
- EPSS
- EPSS 3.69 % · percentile 90 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- @huntr_ai
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-22 — Improper Limitation of a Pathname to a Restricted Directory
References
- https://huntr.com/bounties/19380271-3fbf-4beb-987e-6fd7069c55e6
- https://github.com/mlflow/mlflow/commit/6e801f4259d96804c73107315b24cef0f6aa115a
- https://access.redhat.com/security/cve/CVE-2026-2614
- https://bugzilla.redhat.com/show_bug.cgi?id=2469309
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-2614.json
- https://access.redhat.com/errata/RHSA-2026:37275
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/errata/RHSA-2026:34456
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | @huntr_ai |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | redhat-SADP |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Secondary) |
| CVSS 3.0 | HIGH 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · security@huntr.dev (Secondary) |
Advisories
- GHSA-42h5-h8qh-vv9v — MLflow allows an unauthenticated remote attacker to read arbitrary files from the server's filesystem
- PYSEC-2026-2654 — MLflow allows an unauthenticated remote attacker to read arbitrary files from the server's filesystem
European references
- ENISA EUVD · EUVD-2026-29180
- GCVE · GCVE-0-2026-2614
Affected configurations (NVD CPE)
cpe:2.3:a:lfprojects:mlflow:*:*:*:*:*:*:*:*< 3.10.0
Affected products
| Product | Versions |
|---|---|
| mlflow · mlflow/mlflow | affected unspecified < 3.10.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |