MLflow pickle evaluation artifact deserialization allows remote code execution
Original title: ZDI-26-839: MLflow PickleEvaluationArtifact Deserialization of Untrusted Data Remote Code Execution Vulnerability
A user must open a malicious page or file; ZDI rates CVE-2026-118623 at CVSS 7.8.
ZDI-26-839 reports unsafe deserialization in MLflow's PickleEvaluationArtifact. A remote attacker can execute arbitrary code if the target visits a malicious page or opens a malicious file. ZDI assigned CVE-2026-118623 a CVSS score of 7.8. The notice does not state versions, a patch, or active exploitation.
Unconfirmed: Affected versions, a fix, and in-the-wild exploitation are not stated.
- User interaction is required to trigger code execution.
- The flaw is deserialization of untrusted data.
- The advisory identifier is ZDI-26-839.
Impact: arbitrary code execution after user opens malicious content
| Product | Affected |
|---|---|
| MLflow | — |
- CVEs
- CVE-2026-118623
- Products
- MLflowPickleEvaluationArtifact
- Organizations
- Zero Day Initiative
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-118623 | — | — | — |
From the original article
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 ZDI has assigned a CVSS rating of 7.
zerodayinitiative.com
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.