CVE-2026-2033Network attack vector

Unauthenticated code execution via artifact path traversal

Published Feb 20, 2026 · Updated Feb 20, 2026

Path traversal in MLflow Tracking Server 3.1.1 allows remote attackers to execute arbitrary code through crafted artifact metadata. FileStore._find_run_root accepts a malicious meta.yaml beneath an artifact directory as a run root and uses the attacker-controlled path in file operations. No authentication or user interaction is required; successful exploitation runs code with the tracking service account's privileges.

CVSS severity8.1
High
EPSS probability1.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in MLflow Tracking Server 3.1.1 allows remote attackers to execute arbitrary code through crafted artifact metadata. FileStore._find_run_root accepts a malicious meta.yaml beneath an artifact directory as a run root and uses the attacker-controlled path in file operations. No authentication or user interaction is required; successful exploitation runs code with the tracking service account's privileges.

The record

CVE
CVE-2026-2033
Published
Feb 20, 2026
Updated
Feb 20, 2026
Vendor
MLflow Project
Product
MLflow
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MLflow Project · MLflowversion=3.1.1 and 5b9c01925c2e2a8cf0951f155a6a468ff99cfe0f

Published CVSS scores

8.1Zero Day InitiativeCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3redhat-SADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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