CVE-2026-39985

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. Prior to 27.0.3 and 28.0.1, the redirect parameter upon login to LORIS was not validating the value of the redirect as being within LORIS, which could be used to trick users into visiting arbitrary URLs if they are given a link with a third party redirect parameter. This vulnerability is fixed in 27.0.3 and 28.0.1.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/aces/Loris/commit/f57f54b42a076bf53ba86e20d4dbf37f63538f58	Patch
https://github.com/aces/Loris/releases/tag/v27.0.3	Release Notes
https://github.com/aces/Loris/releases/tag/v28.0.1	Release Notes
https://github.com/aces/Loris/security/advisories/GHSA-rch2-f5fw-cg95	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) LORIS (Longitudinal Online Research and Imaging System) es una aplicación web autoalojada que proporciona gestión de datos y proyectos para la investigación en neuroimagen. Antes de las versiones 27.0.3 y 28.0.1, el parámetro de redirección al iniciar sesión en LORIS no estaba validando que el valor de la redirección estuviera dentro de LORIS, lo que podría usarse para engañar a los usuarios para que visitaran URLs arbitrarias si se les proporcionaba un enlace con un parámetro de redirección de terceros. Esta vulnerabilidad está corregida en las versiones 27.0.3 y 28.0.1.

Information

Published : 2026-04-09 18:17

Updated : 2026-10-26 21:10

NVD link : CVE-2026-39985

Mitre link : CVE-2026-39985

CVE.ORG link : CVE-2026-39985

JSON object : View

Products Affected

mcgill

loris

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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