A HIGH-severity vulnerability identified as CVE-2026-7584 has been published on May 1, 2026 with a CVSS base score of 7.8. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-7584
Severity: HIGH
CVSS Score: 7.8
Published: May 1, 2026
Weakness (CWE): CWE-502
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
Technical Description
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.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to compromise sensitive data confidentiality, tamper with system integrity, cause a denial of service. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-6023 — CVSS 8.1 (April 22, 2026) — HIGH / CVSS 8.1
- [HIGH] CVE-2026-39467 — CVSS 7.2 (April 21, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2026-42402 — CVSS 7.5 (May 1, 2026) — HIGH / CVSS 7.5
![[HIGH] CVE-2020-37227 — CVSS 8.8 (May 16, 2026)](https://atlas-cybersecurity.com/wp-content/plugins/elementor/assets/images/placeholder.png)
