Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mcgill | Loris | >= 15.10, <= 27.0.2 |
Related Weaknesses (CWE)
References
- https://github.com/aces/Loris/security/advisories/GHSA-776p-5pwh-vc8pPatchVendor Advisory
FAQ
What is CVE-2026-35403?
CVE-2026-35403 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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, t...
How severe is CVE-2026-35403?
CVE-2026-35403 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35403?
Check the references section above for vendor advisories and patch information. Affected products include: Mcgill Loris.