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OpenAdvisories
High · 7.5 CVE-2026-34392 EUVD-2026-20557

LORIS has a path traversal in static router

Published Apr 8, 2026 · Updated Apr 9, 2026 · Assigned by GitHub_M

Description

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

VendorProductAffectedFixed
aces Loris >= 20.0.0, < 27.0.3, >= 28.0.0, < 28.0.1 —

References