CVE-2026-34985 MEDIUM

CVE-2026-34985: LORIS has incorrect access checks in media module

Vendor Aces
Product Loris
Weakness CWE-639 · IDOR
Published April 8, 2026
Last update April 10, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

What the vulnerability does

01Description

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 16.1.0 to before 27.0.3 and 28.0.1, While the frontend of the media module filters files that the user should not have access to, the backend was not applying access checks and it would be possible for someone who should not have access to a file to access it if they know the filename. This vulnerability is fixed in 27.0.3 and 28.0.1.

Key dates

02Disclosure timeline

April 8, 2026 CVE published
April 10, 2026 Record updated