---
title: "CVE-2023-6831: Path traversal in MLflow"
url: https://erroneo.us/security/cve/CVE-2023-6831/
description: "CVE-2023-6831 (mlflow (PyPI)): Path Traversal: '\\..\\filename' in GitHub repository mlflow/mlflow prior to 2.9.2."
type: vulnerability-record
section: "Security Digest"
date_published: 2023-12-15
date_modified: 2024-08-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-6831"
kev: false
cvss: 10.0
epss: 0.0329
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-6831: Path traversal in MLflow

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 3.3% , percentile 88: FIRST’s model estimates a 3.3% chance of exploitation activity in the next 30 days, higher than 88% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes mlflow (PyPI) < 2.9.2, fixed in 2.9.2 . Check your lockfile, including transitive dependencies.

## What it is

Path Traversal: '\..\filename' in GitHub repository mlflow/mlflow prior to 2.9.2.

## Affected packages

- PyPI `mlflow` < 2.9.2 → fixed: 2.9.2

## Affected products (CVE record)

- mlflow mlflow/mlflow: unspecified < 2.9.2

## Severity

- @huntr_ai CVSS 3.0: 8.1 `CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`
- GitHub CVSS 3.1: 10.0 `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 3.29% probability of exploitation activity in the next 30 days; percentile 88.

## Sources

- [GitHub Advisory GHSA-554w-xh4j-8w64](https://github.com/advisories/GHSA-554w-xh4j-8w64)
- [CVE.org record CVE-2023-6831](https://www.cve.org/CVERecord?id=CVE-2023-6831)
- [NVD entry CVE-2023-6831](https://nvd.nist.gov/vuln/detail/CVE-2023-6831)
- [huntr.com](https://huntr.com/bounties/0acdd745-0167-4912-9d5c-02035fe5b314)
- [github.com](https://github.com/mlflow/mlflow/commit/1da75dfcecd4d169e34809ade55748384e8af6c1)
- [github.com](https://github.com/pypa/advisory-database/tree/main/vulns/mlflow/PYSEC-2023-253.yaml)

---
Source page: https://erroneo.us/security/cve/CVE-2023-6831/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt