CVE-2026-7584: Zhinst Labone Q

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

The LabOne Q serialization framework uses a class-loading mechanism (import_cls) to dynamically import and instantiate Python classes during deserialization. Prior to the fix, this mechanism accepted arbitrary fully-qualified class names from the serialized data without any validation of the target class or restriction on which modules could be imported. An attacker can craft a serialized experiment file that causes the deserialization engine to import and instantiate arbitrary Python classes with attacker-controlled constructor arguments, resulting in arbitrary code execution in the context of the user running the Python process. Exploitation requires the victim to load a malicious file using LabOne Q's deserialization functions, for example a compromised experiment file shared for collaboration or support purposes.

Affected products

• Zhinst Labone Q: from 2.41.0, before 26.1.2 (fixed in 26.1.2); version 26.4.0 only

Published 2026-05-01. Last modified 2026-06-17.