CVE-2025-15036Public exploitNetwork attack vector

Arbitrary file overwrite via unchecked tar extraction

Published Mar 30, 2026 · Updated Mar 30, 2026

Path traversal in MLflow before 3.9.0 allows attackers to overwrite arbitrary files through a crafted tar.gz model artifact. The extract_archive_to_dir function in mlflow/pyfunc/dbconnect_artifact_cache.py passed archive members to tar extraction without validating that their resolved paths remained under the destination directory. Exploitation requires control of an archive that MLflow extracts and can escape a sandbox or inherit the MLflow process's file privileges in shared clusters.

CVSS severity9.6
Critical
EPSS probability0.58%
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 before 3.9.0 allows attackers to overwrite arbitrary files through a crafted tar.gz model artifact. The extract_archive_to_dir function in mlflow/pyfunc/dbconnect_artifact_cache.py passed archive members to tar extraction without validating that their resolved paths remained under the destination directory. Exploitation requires control of an archive that MLflow extracts and can escape a sandbox or inherit the MLflow process's file privileges in shared clusters.

The record

CVE
CVE-2025-15036
Published
Mar 30, 2026
Updated
Mar 30, 2026
Vendor
MLflow Project
Product
MLflow
Classifications
CWE-29, CWE-22, T1565.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 30, 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=unspecified <3.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MLflow Project · MLflowversion=unspecified <3.9.0

Published CVSS scores

9.6Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
10.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.6huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/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.

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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'
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1565.001Stored Data Manipulation

Public exploit references

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

Technologies

Your stack

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Your stack

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