File Access Vulnerability in LabOne Web Server by Zurich Instruments
CVE-2026-6903

8.7HIGH

Key Information:

Vendor

Zurich Instruments

Status
Labone
Vendor
CVE Published:
23 April 2026

What is CVE-2026-6903?

The LabOne Web Server, integral to the LabOne User Interface provided by Zurich Instruments, suffers from insufficient input validation in its file access functionality. This may allow an unauthenticated attacker to read arbitrary files that are accessible to the user running the LabOne software. Moreover, the server fails to adequately restrict cross-origin requests, enabling remote attackers to exploit this vulnerability by directing victims to malicious sites. Installation scenarios running solely on LabOne APIs without the initiation of the Web Server remain unaffected.

Affected Version(s)

LabOne 0 < 26.01.3.9

References

https://www.zhinst.com/support/security/2026/zi-sa-2026-001/
vendor-advisory
https://www.zhinst.com/support/download-center/
patch

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.