CVE-2026-35165: Mcgill Loris

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 21.0.0 to before 27.0.3 and 28.0.1, while the document_repository frontend was restricting file access, the backend endpoint was not correctly verifying access permissions. A user could theoretically download a file that they should not have access to, if they know or can brute force the filename. This vulnerability is fixed in 27.0.3 and 28.0.1.

Affected products

• Mcgill Loris: from 21.0.0, up to and including 27.0.2; version 28.0.0 only

Published 2026-04-08. Last modified 2026-07-24.