CVE-2023-2780Public exploitNetwork attack vector

Arbitrary file read via crafted model source

Published May 17, 2023 · Updated Jan 22, 2025

Path traversal in MLflow before 2.3.1 allows remote attackers to read arbitrary server files through a crafted model version source. The model-version creation handler treats certain file URIs as nonlocal, bypassing containment validation and accepting an attacker-chosen filesystem source. The tracking server must expose its model registry API without access controls; successful requests disclose files readable by the server process.

CVSS severity9.8
Critical
EPSS probability6.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in MLflow before 2.3.1 allows remote attackers to read arbitrary server files through a crafted model version source. The model-version creation handler treats certain file URIs as nonlocal, bypassing containment validation and accepting an attacker-chosen filesystem source. The tracking server must expose its model registry API without access controls; successful requests disclose files readable by the server process.

The record

CVE
CVE-2023-2780
Published
May 17, 2023
Updated
Jan 22, 2025
Vendor
MLflow Project
Product
MLflow
Classifications
CWE-29, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <2.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MLflow Project · MLflowversion=unspecified <2.3.1

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-29Path Traversal: '\..\filename'
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo