Security Digest · Vulnerability record
CVE-2023-6015: MLflow allowed arbitrary files to be PUT onto the server
MLflow allowed arbitrary files to be PUT onto the server.
CVSS 10.0 Critical EPSS 4.4% · p91
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- 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 4.4%, percentile 91: FIRST’s model estimates a 4.4% chance of exploitation activity in the next 30 days, higher than 91% 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) < 2.8.1, fixed in 2.8.1. Check your lockfile, including transitive dependencies.
What it is
MLflow allowed arbitrary files to be PUT onto the server.
From the GitHub advisory
MLflow allowed arbitrary files to be PUT onto the server.
Weakness type: CWE-22.
Product: mlflow (PyPI) · Assigned by: @huntr_ai · Published: 2023-11-16
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| PyPI | mlflow | < 2.8.1 | 2.8.1 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| mlflow | mlflow/mlflow | unspecified <= latest |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| @huntr_ai | 3.0 | 10 Critical | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| GitHub | 3.1 | 10.0 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 4.44% probability of exploitation activity in the next 30 days; percentile 91.
Timeline
- — CVE record published by @huntr_ai
- — GitHub-reviewed advisory GHSA-f798-qm4r-23r5 published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-f798-qm4r-23r5 github.com
- CVE.org record CVE-2023-6015 cve.org
- NVD entry CVE-2023-6015 nvd.nist.gov
Other references from the CVE record and advisory
- huntr.com huntr.com
- github.com github.com
- github.com github.com