CVE-2026-35165

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.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/aces/Loris/security/advisories/GHSA-qp6x-qfx7-54wp	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mcgill:loris::::::::
	cpe:2.3:a:mcgill:loris:28.0.0:::::::*

History

21 Apr 2026, 20:18

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mcgill:loris:::::::: cpe:2.3:a:mcgill:loris:28.0.0:::::::*
References	~~() https://github.com/aces/Loris/security/advisories/GHSA-qp6x-qfx7-54wp -~~	() https://github.com/aces/Loris/security/advisories/GHSA-qp6x-qfx7-54wp - Patch, Vendor Advisory
First Time		Mcgill Mcgill loris

08 Apr 2026, 19:25

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-08 19:25

Updated : 2026-04-21 20:18

NVD link : CVE-2026-35165

Mitre link : CVE-2026-35165

CVE.ORG link : CVE-2026-35165

JSON object : View

Products Affected

mcgill

loris

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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