Security Digest · Vulnerability record
CVE-2023-6018: Remote Code Execution due to Full Controled File Write in mlflow
An attacker can overwrite any file on the server hosting MLflow without any authentication.
CVSS 10.0 Critical EPSS 47.9% · p99
Should you act?
High exploit likelihood
EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. 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 47.9%, percentile 99: FIRST’s model estimates a 47.9% chance of exploitation activity in the next 30 days, higher than 99% of all scored CVEs (very high). 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 2.9.2. Check your lockfile, including transitive dependencies.
What it is
An attacker can overwrite any file on the server hosting MLflow without any authentication.
From the GitHub advisory
The mlflow web server includes tools for tracking experiments, packaging code into reproducible runs, and sharing and deploying models. As this vulnerability allows to write / overwrite any file on the file system, it gives a lot of ways to archive code execution (like overwriting /home/ /.bashrc). A malicious user could use this issue to get command execution on the vulnerable machine and get access to data & models information.
Weakness type: CWE-78.
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 | 2.9.2 |
| 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:H |
| GitHub | 3.1 | 10.0 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
- 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): 47.87% probability of exploitation activity in the next 30 days; percentile 99.
Timeline
- — CVE record published by @huntr_ai
- — GitHub-reviewed advisory GHSA-5p3h-7fwh-92rc 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-5p3h-7fwh-92rc github.com
- CVE.org record CVE-2023-6018 cve.org
- NVD entry CVE-2023-6018 nvd.nist.gov
Other references from the CVE record and advisory
- huntr.com huntr.com
- github.com github.com