EUVD-2026-20578

| CVE-2026-35403 MEDIUM
2026-04-08 GitHub_M
6.5
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

3
Analysis Generated
Apr 08, 2026 - 19:31 vuln.today
EUVD ID Assigned
Apr 08, 2026 - 19:31 euvd
EUVD-2026-20578
CVE Published
Apr 08, 2026 - 18:27 nvd
MEDIUM 6.5

Tags

XSS

Description

LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 15.10 to before 27.0.3 and 28.0.1, there is a potential for a cross-site scripting attack in the survey_accounts module if a user provides an invalid visit label. While the data is properly JSON encoded, the Content-Type header is not set causing the web browser to interpret the payload as HTML, opening the possibility of a cross-site scripting if a user is tricked into following an invalid link. This vulnerability is fixed in 27.0.3 and 28.0.1.

Analysis

Cross-site scripting (XSS) in LORIS survey_accounts module (versions 15.10 through 27.0.2 and 28.0.0) allows authenticated users with low privileges to inject malicious scripts via invalid visit labels. The vulnerability arises because responses are JSON-encoded but lack a proper Content-Type header, causing browsers to interpret the payload as HTML. …

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Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +32
POC: 0

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EUVD-2026-20578 vulnerability details – vuln.today
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