CVE-2026-6903
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk27th percentile - higher than 27% of all known CVEs
Summary
The LabOne Web Server, backing the LabOne User Interface, contains insufficient input validation in its file access functionality. An unauthenticated attacker could exploit this vulnerability to read arbitrary files on the host system that are accessible to the operating system user running the LabOne software.
Risk Assessment
This vulnerability could lead to the exposure of sensitive data, posing a serious risk to the organization's security. Additionally, the ability to trigger file access from a victim's browser via a malicious website increases the risk of phishing attacks.
Recommendation
Organizations running the LabOne Web Server are advised to implement proper input validation mechanisms and restrict cross-origin requests. It is also recommended to consider disabling the Web Server if it is not essential for application functionality.
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Original NVD description (English source)
The LabOne Web Server, backing the LabOne User Interface, contains insufficient input validation in its file access functionality. An unauthenticated attacker could exploit this vulnerability to read arbitrary files on the host system that are accessible to the operating system user running the LabOne software. Additionally, the Web Server does not sufficiently restrict cross-origin requests, which could allow a remote attacker to trigger file access from a victim's browser by directing the victim to a malicious website. The vulnerability is only exploitable when the LabOne Web Server is running. Installations using only the LabOne APIs without starting the Web Server are not exposed.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

