7.8 High

CVE-2026-118623 MLflow PickleEvaluationArtifact Deserialization of Untrusted Data Remote Code Execution Vulnerability

Description

MLflow PickleEvaluationArtifact Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MLflow. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of pickle files. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29513.

CVSS 3.0 detail

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitable with local access to the machine, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Local
Attack complexity: Low
Privileges required: None
Interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Affected products and versions

Product	Affected versions	Fixed in
MLflow	3.10.1	No fix stated

References

ZDI-26-839 www.zerodayinitiative.com

Timeline

Published November 3, 2026
Last modified November 5, 2026

The 38 CVEs of MLflow →

CVE-2026-118628 MLflow get-artifacts Server-Side Request Forgery Information Disclosure Vulnerability 8.2 High CVE-2026-118627 MLflow SHAP load_explainer Deserialization of Untrusted Data Remote Code Execution Vulnerability 7.8 High CVE-2026-118626 MLflow Tracking Server Issues Missing Authorization Privilege Escalation Vulnerability 5.4 Medium CVE-2026-118625 MLflow Tracking Server Missing Authorization Privilege Escalation Vulnerability 6.3 Medium

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