CVE-2026-34392: Mcgill Loris

High severity, CVSS 7.5. EPSS: 0.4% 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 20.0.0 to before 27.0.3 and 28.0.1, a bug in the static file router can allow an attacker to traverse outside of the intended directory, allowing unintended files to be downloaded through the static, css, and js endpoints. This vulnerability is fixed in 27.0.3 and 28.0.1.

Affected products

• Mcgill Loris: from 20.0.0, before 27.0.3 (fixed in 27.0.3); version 28.0.0 only

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