EUVD-2026-20978

| CVE-2026-39985 MEDIUM
2026-04-09 GitHub_M
4.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
EUVD ID Assigned
Apr 09, 2026 - 17:45 euvd
EUVD-2026-20978
Analysis Generated
Apr 09, 2026 - 17:45 vuln.today
CVE Published
Apr 09, 2026 - 17:08 nvd
MEDIUM 4.3

Tags

Open Redirect

Description

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.

Analysis

Open redirect vulnerability in LORIS (Longitudinal Online Research and Imaging System) versions prior to 27.0.3 and 28.0.1 allows unauthenticated remote attackers to redirect authenticated users to arbitrary external websites via a malicious redirect parameter during login. The vulnerability requires user interaction (clicking a crafted link) but poses a meaningful phishing risk in neuroimaging research environments where LORIS deployments are common. …

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Priority Score

22
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +22
POC: 0

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EUVD-2026-20978 vulnerability details – vuln.today
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