CVE-2023-6909
HighExploitedMLflow Path Traversal Vulnerability
Published Dec 20, 2023 · Updated Sep 8, 2026 · Also known as BIT-mlflow-2023-6909, GHSA-5r3q-93q3-f978, PYSEC-2023-252
Key Facts
Patch immediately- CVE-2023-6909 is a high-severity vulnerability (CVSS 8.7 v4) affecting Mlflow (Lfprojects), mlflow/mlflow.
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 30, 2026. No public exploit code is known.
- EPSS estimates a 90% probability of exploitation in the next 30 days.
- Fixed versions are available, including Mlflow 2.9.2, Mlflow 1da75dfcecd4d169e34809ade55748384e8af6c1, mlflow/mlflow 2.9.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS (30-day exploit likelihood)
90%
Higher than 99.7% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
None known
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Description
Path Traversal: '\..\filename' in GitHub repository mlflow/mlflow prior to 2.9.2.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Apr 30, 2026 | n/a | Not reported |
| CIRCL KEV | Apr 30, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| MlflowLfprojects | See advisory | 2.9.2 |
| mlflow/mlflow | >= unspecified | 2.9.2 |
Patched Releases
Mlflow
2.9.2, 1da75dfcecd4d169e34809ade55748384e8af6c1
mlflow/mlflow
2.9.2
Timeline
Publicly disclosed
Dec 20, 2023
Added to Industry KEV feed
Apr 30, 2026
Added to CIRCL KEV
Apr 30, 2026
Last updated
Sep 8, 2026
Weakness Type
- CWE-29 Path Traversal: '\..\filename'
References
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6909.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-6909
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
Path Traversal: '\..\filename' in GitHub repository mlflow/mlflow prior to 2.9.2.
Affected: Mlflow (Lfprojects); mlflow/mlflow versions >= unspecified. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 30, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Mlflow 2.9.2, Mlflow 1da75dfcecd4d169e34809ade55748384e8af6c1, mlflow/mlflow 2.9.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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