A vulnerability in MLflow versions <=3.10.1.dev0 allows unauthorized access to multipart upload (MPU) endpoints when the --serve-artifacts mode is enabled. The authorization logic does not enforce resource-level permission checks for /mlflow-artifacts/mpu/* endpoints, enabling attackers to overwrite artifacts belonging to other users. This can lead to unauthorized cross-user writes, model supply chain poisoning, and arbitrary code execution when compromised models are loaded. The issue is resolved in version 3.10.0.
CVE-2026-2651
Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-26. a secondary CVSS source baseline 9.0; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.0
- EG Score
- 9.0(medium)
- EG Risk
- —
- EPSS
- 27.0%
- KEV
- Not listed
Published
May 25, 2026
Last Modified
July 21, 2026
Advisory Details (2)
Auto-updated Jun 1, 2026commit d7290811d8f3 (mlflow/mlflow)
Fix landed in mlflow/mlflow commit d7290811d8f3 — awaiting tagged release
https://github.com/mlflow/mlflow/commit/d7290811d8f3c95366d80109424edc1fb1ad966fhuntr - The world’s first bug bounty platform for AI/ML
https://huntr.com/bounties/65beb119-d3e0-4e03-af2f-fa98f78f83dcVendor Advisories for CVE-2026-2651(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| mlflow | 0.0.1 ... 3.9.0rc0 (174 versions) | 3.11.0rc1 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 14× in last 7d / 62× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 220 total refreshes for this CVE.
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Related CVEs(same CWE)
Same CWE
10 shownCWE-862
Frequently asked(5)
What is CVE-2026-2651?
When was CVE-2026-2651 disclosed?
Is CVE-2026-2651 actively exploited?
What is the CVSS score of CVE-2026-2651?
How do I remediate CVE-2026-2651?
Dependency Blast Radius
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