CVE-2026-35403

MediumCVSS 5.4/10Last modified Jul 24, 2026

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.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
aces	Loris	>= 15.10, < 27.0.3; >= 28.0.0, < 28.0.1

References

https://github.com/aces/Loris/security/advisories/GHSA-776p-5pwh-vc8pPatch, Vendor Advisory

Timeline

Published: Apr 8, 2026
Last modified: Jul 24, 2026
NVD status: Analyzed

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