CVE-2026-34392
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductMcgill Loris
PublishedApr 8, 2026
First seenApr 8, 2026
Weakness typeCWE-552CWE-552
How to fix
Update
- mcgill loris27.0.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mcgill loris | 20.0.0 ≤ v < 27.0.3, 28.0.0 | 27.0.3 |
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