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Medium · 6.5 CVE-2026-35403 EUVD-2026-20578

LORIS has potential cross-site scripting in survey_accounts module

Published Apr 8, 2026 · Updated Apr 10, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
aces Loris >= 15.10, < 27.0.3, >= 28.0.0, < 28.0.1 —

References