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Not in CISA KEV
HIGH severity

CVE-2023-6831 — mlflow

HIGHFix: mlflow/mlflow@1da75df

CVE-2023-6831 is a high-severity (CVSS 8.1) CWE-29 vulnerability in mlflow. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for mlflow — see the affected versions and patch details below.

Path Traversal: '\..\filename' in mlflow/mlflow

Also known asBIT-mlflow-2023-6831GHSA-554w-xh4j-8w64PYSEC-2023-253
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
3.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs89th percentile — riskier than 89% of all scored CVEsHighest risk
0.00%31.7%63.5%95.2%74.0%3.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍mlflow

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

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

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPImlflowall versions2.9.2pip install --upgrade 'mlflow==2.9.2'

Affected Products

1 product · 1 configurations
Application
mlflowlfprojects
< 2.9.2
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

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

huntr.comNVDDec 2023

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for mlflow, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update mlflow to 2.9.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-6831 is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

How to detect CVE-2023-6831

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2023-6831 -u https://target
Template
mlflow - Path Traversal
Severity
high
Impact
Authenticated attackers can exploit path traversal vulnerabilities to delete arbitrary files on mlflow servers through crafted API requests.
Remediation
Upgrade Mlflow to version 2.9.2 or later to mitigate the vulnerability.

Template by ProjectDiscovery nuclei-templates (byObin), MIT licensed. View the full template. Scan only systems you are authorised to test.

Frequently Asked Questions

Path Traversal: '\..\filename' in GitHub repository mlflow/mlflow prior to 2.9.2.
O3 Security · Impact-Aware SCA

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CVE-2023-6831: mlflow Path Traversal — Fixed in 2.9.2